The calibrated leak device USES compressed copper material to present a leak at a certain test pressure.

该校准泄露设备使用压缩的铜质材料，在一定的压力测试下显示泄露值。

youdao

The calibrated leak device USES compressed copper material to present a leak at a certain test pressure.

该校准泄露设备使用压缩的铜质材料，在一定的压力测试下显示泄露值。

youdao