例句與用法

1. This fossile is probably over 2 million years
   這化石可能超過(guò)二百萬(wàn)年了
2. Ash deposition on boiler heat exchanger surface is a common phenomenon in fossile fuel powered power plant . this paper focuses on the research building a suitable model of soot deposition status of heat exchanger surface , and constructs a online monitoring system based on the built models . this will provide a reliable foundation to the optimal scheduling of the soot blowers
   本文針對(duì)鍋爐受熱面灰污染危害嚴(yán)重的普遍現(xiàn)象，以北侖電廠600mw1 #鍋爐作為研究對(duì)象，進(jìn)行了有關(guān)電站鍋爐受熱面灰污染在線監(jiān)測(cè)的研究工作，為吹灰優(yōu)化經(jīng)濟(jì)運(yùn)行提供了可靠的依據(jù)。