Design and application of pipeline airvey system in microsphere unit;
微球装置管道气力输送系统的设计与应用
The position held by this player.
中卫位置球员所在的这个位置
place(a golf ball)on a tee
将（高尔夫球）置于球座上.
(basketball) the person who plays center.
（篮球）打中锋位置的球员。
prepare to play(a golf ball)by placing it on a tee
（将高尔夫球置于球座上） 准备击球.
(baseball or softball) the person who plays the position of catcher.
（棒球或垒球）在接球手位置的人。
(football) a person who plays in the backfield.
（足球）在后卫位置的人。
(football) the person who plays tailback.
（足球）踢后卫位置的人。
dual-rate moon position camera
双速率月球位置摄影机
IABC(intra-aortic ballon counter-pulsation)
主动脉内球囊反搏装置
The players were in position.
球员们在守备的位置。
one of the players on the line of scrimmage.
在混战线位置的球员。
floor positions
球员在场上的位置，布局
(football) the person who plays halfback.
（足球）打中卫位置的人。
ball float type level controller
浮球式液面控制装置
height indicator of gyrosphere
陀螺球高度位置指示表
Whst are the different positions on volleyball?
排球在位置上怎样区分？
(ice_hockey) the person who plays center.
（曲棍球）打中锋位置的人。
off-side position
越位位置(指足球赛)