adder

I spied a baby adder slithering away.

我发一条小蝰蜿蜒爬走了。

Two-stage cold coal gas station consists of two-stage coal gasifier, electric detarrer, indirect cooler, electric deoiler, air cooler and coal gas pressure adder.

两段式煤气站是由两段式煤气发生炉、电捕焦油、间接却、电捕轻油、及煤气加压机组成。