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。
Objective To explore the mechanism of pronation reduction for radial head subluxation.
目的探讨桡骨小头半脱位旋前复位法的临床复位机理。
The mountains reeled before his eyes.
群山在他眼前旋转起来。
To strike the upper part of(a ball), giving it forward spin.
上旋击球击打（球的）上半部分，使其向前旋转
Forward rotation imparted to a ball by a stroke, as in tennis.
上旋击球后产生的球向前旋转，例如在网球中
A muscle that effects or assists in pronation.
旋前肌能内旋或辅助内旋的肌肉
A forward spin on a ball resulting from such a stroke.
上旋上部击球形成的向前向上旋转
Numerical prediction for the acoustic noise of helicopter rotor in forward flight
前飞状态下直升机旋翼旋转噪声预测
forward and backward movement knob
载物台前后运动螺旋
The car raced on at top speed.
汽车是旋风般向前进。
rotary phase advancer
旋转相位超前补偿器
(in billiards)(cause a ball to)move in a curved path while spinning
（台球）（使球）侧旋前进.
one arm swinging front loader
单臂旋转式前置装载机
An airplane propeller mounted in front of the supporting surfaces.
牵引螺旋桨安装在支承面前面的飞机螺旋桨
"To lift the balance, extend the front leveling feet (turn clockwise)."
电子天平升高,右旋前面地脚;电子天平下降,左旋前面地脚螺栓。
To turn or rotate(the hand or forearm)so that the palm faces down or back.
使旋前，使内转转或旋（手或前臂）使掌面朝下或朝后
You can move it from side to side or up and down, But you cannot twist it.
你可以左右前后移动，但是不能旋转。
Dextrose (grape sugar) An outdated name for GLUCOSE.
葡萄糖（右旋糖）：葡萄糖以前的名称。
The Automatic Recognition of Frontal Face with Large Rotation Angle
大旋转角度人脸前视图的自动识别
The plane spiraled the airport before.
飞机降落前在机场上空盘旋。