Solar heater
un. 太阳能加热器\\n
🧩 词语组成解析
🗣️ 情景例句
Please do the work at your own convenience.
请在方便时把这事做一做。
She has gone to take a look at the art gallery.
她为了参观美术品陈列馆而出去了。
and we control it by means of the mud which we circulate down the drill pipe.
我们让泥浆顺着钻杆向下循环，用这种方法来控制压力。