Fitted with electronic pre-determined counter to determine the number of cycles per test, acrylic plastic cover with interlock for safety.

其电子计数器可控制每次测试的测试周期，配有联锁塑料盖以保证安全性。

youdao

Glass and acrylic (plastic) covers are both used today.

现在玻璃和压克力(塑料)覆盖物都经常使用。

youdao

Acrylic plastic is used to harden the paper.

VOA: special.2010.06.28

The outer layers are made of acrylic plastic and the vacuum chamber in the middle is divided into three or four watertight compartments stacked on top of one another.

ECONOMIST: Cataracts

Solly Akoojee has for 21 years run a store that serves Randfontein's miners, selling acrylic cardigans and nylon trousers, cheap electronics and plastic luggage.

ECONOMIST: South Africa