rectangle plate with circle hole

• 开孔板

rectangle plate with circle hole的用法和样例：

例句

1. The design program has been introduced with a perforated plate distributor in a molecular sieve adsorber of a small scale air separation unit as an example.
   以小型空分设备分子筛吸附器的孔板分布器为例，通过例题演算，介绍了设计程序。