steam open

She held the letter over the kettle to steam it open.

她把信放在水壶上,用蒸汽开启信封.

Close the door to seal in the steam that will open your pores and give your face a healthy glow.

关上门，让自己弥漫在蒸气中，可以让你的毛孔张开，面露红光。

Main steam temperature system is a typical open loop stable system with large time delay, its model can be described by an equivalent First Order plus Pure Dead Time ( FOPDT) type.

火电厂主汽温系统是典型的大滞后开环稳定系统，其过程模型可以等效为常用的一阶加纯滞后形式（FOPDT）。

How does the steam trap know when to open and close?

疏水阀是如何知道何时开启何时关闭?

The law of flow coefficient affected by valve lift, refrigerant inlet density and refrigerant outlet steam quality was investigated based on quick-open ball thermal expansion valve.

以球型快开热力膨胀阀为对象，采用试验方法研究阀开度以及进口制冷剂密度、出口干度对膨胀阀流量系数CD的影响规律。