The company has tested its source particles in the lab, using a vacuum chamber and hot gases to simulate the conditions the pellets would encounter upon re-entering Earth's atmosphere.
这家公司已经在实验室里测试了源粒子，使用了一个真空房间和高温气体来模拟小球进入地球大气层的情况。
2
The handsets are placed in an environmental chamber and are subjected to severe temperature and humidity conditions to test their reliability.
手机被置于一个环境舱中，然后经受几种温度和湿度条件，从而测试其可靠性。
3
The conditions to realize automatic control of chamber pressure in heating furnace are concluded.