ashless paper
常見(jiàn)例句
- In this paper, its history was introduced. The functional elements and their action mechanisms of ashy and ashless additives were analyzed.
文章簡(jiǎn)要介紹了消煙助燃劑的發(fā)展史，對(duì)有灰型與無(wú)灰型消煙助燃劑的功能單元及作用機(jī)理進(jìn)行分析。 返回 ashless paper