国产成人综合95精品视频,亚洲av成人精品一区二区三区,四虎永久免费观看在线,久久久一本精品99久久精品88,天天做天天爱夜夜爽毛片毛片

essentialities

英[]
美[]

基本釋義

n.
本性( essentiality的名詞復(fù)數(shù) ); 真髓; 本質(zhì); 重要性

實用例句

Some essentialities in operation and maintenance of high speed trains are discussed.

論述了高速列車在運用檢修中的若干個基本問題.

互聯(lián)網(wǎng)

There are many factors influencing spontaneous combustion in goaf and their relative essentialities are different.

采空區(qū)自然發(fā)火的影響因素很多,各因素之間的相對重要性不同.

互聯(lián)網(wǎng)