后制动器的英文：
rear platen

rear是什么意思：
n. 后方；后部，背面；臀部
adj. 后面的；后部的
v. 饲养；培养；暴跳；树立；高耸；抬起

The rear sight of a firearm.
枪的表尺，后瞄准器 。

The hen rears her brood.
母鸡孵育一窝鸡雏。

The horse kicked him in the rear.
马蹄踢在他的屁股上。

He reared his head.
他抬起头。

He was reared in the lap of luxury.
他在奢侈的环境中长大。

platen是什么意思：
n. 压盘,滚筒

The replicas are made by using a thin film of fusible alloy on a stiffening platen
复制是用附着在加强托板上的可熔合金薄膜实现的。

Platen: Small letterpress printing machine on which the paper is held in the platen and pressed up against the vertically-held type-bed.
平压机:小型活版印刷机。纸张摆稳于压板上，然后压向垂直的装版台的机器。

A heavy glazed paper or pasteboard used especially to cover the platen or cylinder of a printing press.
压制板重而光滑的纸板或硬纸板，主要用于覆盖印刷机的压纸卷筒或滚筒