Venturi tube is one of key equipments in process of purification and recovery of converter gas, which is used to drop temperature of converter gas with spraying jet fixed at throat of Venturi tube.

文氏管内部的流动与传热较为复杂，不仅涉及喷淋液滴与烟气在流动过程中的相互作用，而且涉及喷淋液滴遇到高温烟气发生相变进行的传热传质。

youdao

Experts say heat waves often become dangerous when the nighttime temperature does not drop much from the highest daytime temperature.

VOA: special.2010.07.27

So I've got, this piston here is compressed, and I slowly, slowly increase the volume, drop the temperature.

这样，这个活塞就被压缩了，然后我再很慢很慢地增加它的体积，降低温度。

麻省理工公开课 - 热力学与动力学课程节选

The evaporation process creates a drop in temperature of several degrees.

VOA: special.2009.02.09

In fact, they say, the sudden drop in temperature can be dangerous for people with underlying health issues.

CNN: Are polar bear plunges good for you?

The children were so weak they couldn't cope when a tiny drop in the temperature came after sunset.

BBC: [an error occurred while processing this directive]

There was also a perceptible drop in the temperature, and the breeze blowing over this desert village suddenly felt a lot cooler.

BBC: Under the Moon's shadow