Results showed compared with palm-up volo technique,which is characterized by forward spin and low peak flying,plam-down volo technique is easy to produce quick backward spin high peak flying,therefore,increasing the ball s hitting ratio and residing ratio.
运用力学理论和方法对正、反手抛击技术动作进行了分析 ,结果发现 :与产生前旋、低平飞行的抛击球为主要特征的正手抛击技术相比 ,反手抛击技术易产生较大后旋速度的高吊抛击球 ,有利于增加击球的命中率和留球率。
tighten the screw on a fruit press
旋紧水果榨汁机的螺丝
To renew a broken clamp screw for air port in fitter's quarter.
更换机匠舱里损坏的舷窗及旋紧螺丝。
The plumber screwed up the tap by means of a spanner.
管子工用板手把龙头旋紧。
We must tighten these screws.
我们必须把这些螺钉旋紧。
Turn the lid clockwise if you want to fasten it tightly.
如果你想把盖子旋紧,就按顺时针方向
Yes , you can twist it that much.
我说肯定的,你可以把主弦旋紧1/2?嫉?
The motor was a rubber band that had to be turned many times until it was tight.
它的马达是一根橡皮筋，必须旋转很多次直到旋紧为止。
Screw the FOX Racing Shox High Pressure Pump onto the air valve until the pump shows pressure on the gauge. Do not over-tighten.
把避震专用打气筒旋紧在气阀上直到避震气筒上的压力表有气压显示，不要过份旋紧。
The Bolts should be checked for tightness after an appropriate interval of use and retightened if necessary.
在正常使用一段时间后,要检查核对所有的螺栓是否旋紧,并进行必要的再旋紧。
rotation-lock tubing hanger
旋转锁紧油管悬挂器
He gave it another screw and the lid was tightly on.
他又拧了一下,盖子就紧紧旋上了。
He gives it another screw and the lid is tightly on
他又拧了一下,盖子就紧紧旋上了
Screw out the oil plug while filling, and screw down as finished.
注油时，将油塞旋下，注油毕，再将油塞旋上拧紧。
I had to cling tight to the backstay, and the world turned giddily before my eyes;
我只觉得天旋地转，不得不紧紧抓住后牵索。
A device at the lower end of the bow for a stringed instrument, used for tightening the hairs.
松紧旋纽琴弓尾端的装置，用于松紧金属丝
The propeller can follow the wind velocity closely during hingspeed gusts.
螺旋桨在有高速狂风时能紧紧地追随风速。
It is important to recognize the point of stall and the beginning of a spin.
认识失速点和旋转的开始是很要紧的。
a band that can be tightened around a shaft to stop its rotation.
能够拉紧车轴并使其停止旋转的带子。