臂

Why do you use the underarm serve?

你为何用低臂式了球？

You don't have much cintrol with underarm shots.

用臂下击球你没有太多的控制力。

Can you use an underarm serve?

你会用用臂下发球吗？

Wearing nothing but her underclothing, she outstretched her other smooth arm and lay her warm palm on his tense hands, still gripping the doorknob.

只穿着内衣的她又抬起一只玉臂，将温热的手掌放在他那双还紧张得抓着门柄的手上。

Might as well right now the motion that makes wrist of make a long arm coming back more, raise the right hand in head west the front, on palmar face, thumb downward, little finger upgrade, make the artifice is tightened toward right underspin; In the meantime, left hand is gone to extend by left hip, finger is flagging, thumb upgrade, little finger downward, make the artifice is tightened toward right underspin; Next at the same time the right hand again as far as possible upgrade is extended, left hand is extended downward as far as possible, at the same time with Nose Slowly inspiratory, make acerbity hemp feels all round two tactics wrist, be adjusted.

此时不妨多做伸臂旋腕的动作，将右手举在头右前方，手掌朝上，大拇指往下，小指往上，使手腕往右下旋紧；同时，左手往左臀部旁伸，手指下垂，大拇指往上，小指往下，使手腕往右下旋紧；然后同时右手再尽量往上伸，左手尽量往下伸，同时以鼻子缓缓吸气，使两手腕周围感到酸麻，受到调整。

For West Asians, being kept "at arm's length" signals unfriendliness.

对西亚人来说，"保持一臂距离"是不友好的表示。

On this foundation, application changes control of structural slippery model designed dimensional machine theoretically inertial space contrail coordinates brachial carrier attitude and extreme ungual hand of motion change; of program of control of structural slippery model to overcome afore-mentioned changing controller of structural slippery model trembles brace up defect, add designed an ambiguous controller, with coming to dynamic adjustment to change according to control output of the system the structure slips the coefficient that the fast approach such as modular controller leads, achieve thereby make sure the system is had already answer quickly can eliminate original controller to have again tremble brace up the purpose of defect.

在此基础上，应用变结构滑模控制理论设计了空间机械臂载体姿态和末端爪手惯性空间轨迹协调运动的变结构滑模控制方案；为了克服上述变结构滑模控制器抖振的缺点，附加设计了一个模糊控制器，以根据系统的控制输出来动态调节变结构滑模控制器等速趋近率的系数，从而达到既保证系统具有快速响应又能消除原有控制器具有抖振缺点的目的。

To eliminate common-mode voltage of cascaded multi-level inverter, three kinds of phase-difference SVM based on left and right bridge vectors are proposed firstly. From these three modulations, equivalent SPWM components are deduced, and the unipolarity and bipolarity of output waveforms are analyzed. 2π/3 PD-SVM (phase-difference space vector modulation) is testified be unipolar.

为消除级联型多电平逆变器的输出共模电压，首先提出了基于左、右桥臂矢量的三类相差空间矢量调制(space vector modulation，SVM)技术，数学推导出三类调制技术的等效正弦脉宽调制(sine pulse width modulation，SPWM)的调制波，并分析了其各自相电压输出波形的单、双极性，证明2π/3相差SVM必为单极性调制。

In a magnetic disk unit, an arm on which magnetic heads are mounted.

磁盘机中一种用于安装磁头的臂状部件。

Bobby Leach, an Englishman, startled the world some years ago by his daring feat of going over Niagara Falls in a barrel. He came through the experience miraculously unscratched.

在战场上只能进攻，不能退却】约翰怀特在他所著的书『战役』里，这样写着：『在战场上，你当然可能会受伤，会缺臂断腿的，但凡是能卷土重来再战一场的人，就是战士。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。