This question didn't bother her for long, but: Oh my God, her sister is in better shape than me, only 15 years old!

No wonder he doesn't look at me very much.

After the two came out, Liu Sen told Jiang Xue about the kickback, and returned the kickback of her three clothes to her, she pouted, "Ah, then do I look good in dressing?"

"Good looking, all suited to you. ”

Jiang Xue was relieved and refused to accept the kickback, "Brother Sen, this is something you earned with your ingenuity, you shouldn't return it to me, and I can't ask for it." ”

She is very persistent and very principled in certain things.

Liu Sen was not hypocritical, so he had to give up.

Just a few steps away, there is a TOM bear.

Jiang Xue happily bought a lot of coins to catch the doll there, but she couldn't catch any of them, and when she saw that she was about to catch them, she fell down, and her heart was stirred up, and she was determined not to stop until she caught it.

These claws have been manipulated by the clerk, how can they be caught so easily.

There are eight claw machines, and no one catches them, but the girls just enjoy it.

"If you keep catching it like this, you won't be able to catch a single one of the coins if you waste all of them. ”

"What should I do then?" Jiang Xue was also very anxious, after coming here to play, she seemed to have suddenly become a little girl, and her cute and cute temperament soared.

"Brother Sen, will you catch this, you can help me catch one. ”

Jiang Xue grabbed Liu Sen's arm and looked at him pitifully.

Yu Xiaoling also likes to catch dolls, and Liu Sen knows the principle.

One of the key technologies of the crane grabbing machine is that the grabbing probability can be set manually.

A crane grabber controls the gripping force by adjusting the voltage.

Generally, there are two settings: strong grip and weak grip.

The grabbing process is divided into two links: grabbing the doll and transporting the doll, these two sections of grip can be set in sections, Liu Sen just silently observed, this crane machine set a strong grip for 2 seconds, and after grabbing the doll, it turns into a weak grip to make the doll fall unconsciously in mid-air.

Jiang Xue has a lot of experience in catching dolls, so she can catch them, but as soon as her grip becomes weak, she can't stop, so she can only remorsefully invest coins and play again, entering a dead loop.

Throwing in a coin, Liu Sen slid the operating lever, first let the operating lever swing up, lower the claw, and grab it, but it didn't slide down to the exit like Jiang Xue just now.

Jiang Xue looked at it and went to get it excitedly, then jumped up and yelled.

Emotional intelligence is very high, and his mood has not fluctuated much, and he looks like a neurotic at this time.

Liu Sen couldn't understand it, girl, your G-spot is really special.

"Brother Sen, do you know? This is the first time I've caught a real doll, so I'm so happy. ”

She grabbed his arm, and if it weren't for the difference between men and women, she threw herself into her arms and hugged a porcelain.

The eyes of the other little couples of the crane machine were all attracted, and there was a pair of suspected couples wearing junior high school uniforms, and the girls were envious and complained about their male partners.

"Look at people, you're really useless. ”

"I want it too. ”

"Husband, catch one too. ”

The male companions rolled up their sleeves and did it, but they still fell off halfway through the work, and they all cast resentful glances at Liu Sen, MMP, who wants you to arrest it?

Jiang Xue was very excited, "Brother Sen, I want another one." ”

Liu Sen didn't want to catch it anymore, why could he catch it? There is a skill in this, just because of the 2S strong grip, and the process of grabbing the doll and pulling it up takes a certain amount of time, so the doll under the grabs will fall off before it is pulled up.

It is essential to choose the doll in the highest possible position.

The claw clamps the doll, straight up and straight down can clamp the doll, but when it comes to the high point, the doll still falls back, and this kind of claw is weak grip when moving horizontally.

The first key point is that the claw must be obliquely grasped, and the tilt angle is related to the lower grasp point, the position of the hole, and the position of the doll, which can be solved by geometric analysis.

Just now, Liu Sen started the capture array diagram to find the best bottom grasp point and bottom grasp angle, and naturally succeeded in one fell swoop, in the final analysis, it is analytical geometry and physical force analysis.

For Mathematics Level II, Physics is also pushed to Level I, capturing Liu Sen next to the formation diagram, catching the doll, so-easy.

However, it costs 10 spiritual power.

Grab a meaning.

Jiang Xue looked at it with a blank eye, "Brother Sen, I still want it." ”

Liu Sen finally understood the power of a woman when she said these three words.

Okay, brother costs another 10 points.

One hit is sure to hit and succeed again, beautiful pink doll.

"Wow, that's beautiful. ”

Jiang Xue was startled, no different from a five-year-old girl.

The seven machines next to him killed a lot of coins, but they still found nothing, and they couldn't wait to smash the machine and take the doll directly.

"Baby, let's go buy dolls, what you want, what to buy. ”

A man dressed in gold said domineeringly.

"No, I just want that doll, you catch it for me. ”

For a moment, seven pairs of resentful eyes were jealous and resentful.

Jiang Xue looked at the crane machine reluctantly, she still wanted it, but she was embarrassed to speak.

"Brother Sen, you are so strong. ”

Beep beep, Liu Sen was thinking about leaving, and seven lights came from the system.

"Gain 120 points of Jin Lei's jealousy. ”

"Gain 140 points of Cao Lin's jealousy. ”

……

Seven people are close to 1000 points.

Is it these seven brothers? There's also a junior high school student.

"Jin Lei, you're really useless, you can't catch it, look at the uncle next door. ”

The junior high school girl complained.

Sure enough, he got 150 points of Jin Lei's jealousy.

Liu Sen was happy and said to Jiang Xue: "Do you still want it?"

"Hmm. ”

"The doll in here was contracted by you. ”

The domineering president has a wood.

Jiang Xue was overjoyed, "Brother Sen's mighty. ”

One coin per coin.

Soon, the dolls in this machine were almost caught, Jiang Xue couldn't hold so many dolls in her arms, it wasn't too much, she was so excited, every time Liu Sen caught one, she had to scream.

Those seven emotional energies are constantly flowing.

The female companion kept complaining.

"You're useless, useless. ”

"You can't. ”

"Look at the people. ”

"You can't even catch a doll. ”

The seven of them were depressed, and tried their best not to smash the machine.

Until the junior high school student Jin Lei came over and asked sincerely, "Uncle, how did you catch the doll?"

Nima, a junior high school student calling uncle, is really ga.

Several other men also gathered around to learn from the experience.

Liu Sen said: "Do you want to learn?"

Chicks peck rice.

This is a pendulum model of the line and the grab, by shaking the lever left and right, the grabber and the line will form an angle, observe the speed and angle of the grab, grasp at the right place and the right time, it's that simple. ”

"Of course, it's better to think about air resistance again and make corrections. ”

While talking, while demonstrating, the last doll was also caught.

Sure enough, it was exactly the same.

The seven of them were stunned, and they looked helpless.

"Still don't understand?" Liu Sen asked, "Jiang Xue, did you bring pen and paper?"

Jiang Xue carried it with her and took it out.

Liu Sen immediately drew a model of a line and a claw, and said: "When the claw is tilted towards the hole, the force can be decomposed into: upward traction, vertical upward gravity, and the combined force of the claw, according to the knowledge of geometry, the direction of the interaction force between the doll and the claw, according to the position of the lower grasp, the hole, the position of the doll, establish a geometric model, and calculate the angle ......."

Even more confused, Nima.