More often , all of the materials etchant have a finite etch rate.

剂中的材料都具有一定的刻蚀速率。

More often, all of the materials exposed to the etchant have a finite etch rate.

通常， 所有暴露在刻蚀剂中的材料都具有一定的刻蚀速率。

More often, all of the materials exposed to the etchant have a finite etch rate.

通常，所有暴露在刻蚀剂中的材料都具有一定的刻蚀速率。

It was relative to the etching depths, temperature and the etchant proportion and types.

凸角侧向腐蚀程度与腐蚀深度、腐蚀温度、腐蚀剂配比等诸多因素有关。

The specimen will not etch if the clamp material is more readily attacked by the etchant.

标本不会钳材料蚀刻，如果是更容易攻击的腐蚀剂。