be held in position中文什么意思

使...处于适当位置

• held:    hold 的过去式和过去分词。
• position:    n. 1.位置；方位；地点。 2.处 ...
• be held for:    比赛为...而举行

例句与用法

1. The wood is held in position by a clamp .
   木头用钳夹固定住了。
2. The trunnion assembly is supported by air bearings at the end of each arm and is held in position by brake shoes at each bearings .
   耳轴组件的支承是每根臂末端的空气轴承，轴承上的闸瓦起定位作用。
3. Solids have definite shapes ( e . g . crystals ) . the particles are held in position . they just vibrate
   固体有明确的外形（如晶体） 。粒子固定在某个位置，它们只是在振动。