例句與造句

1. Most of the switch tubes used presently work in the gas spark region ( the right branch of paschen curve ) , and are made of graphite and mental such as tungsten , molybdenum , stainless steel and mercury
   目前實(shí)際應(yīng)用的開(kāi)關(guān)管多數(shù)工作在火花放電區(qū)域(巴邢曲線的右支) ,使用的電極材料一般為鎢、鉬、不銹鋼、水銀、石墨等。
2. It's difficult to find sparking region in a sentence. 用sparking region造句挺難的