emission control是什么意思？

Several different types of troubles may be caused by improper conditions in the evaporative - emission - control systems.蒸发控制系统的不正常工况能引起不同类型的故障.All automobile engines now built are equipped with the positive - crankcase ...

emission control的音标：emission control的英式发音音标为：[ɪ'mɪʃən kən'trəul]emission control的美式发音音标为：[ɪ'mɪʃən kən'trol]...

“说起来”的拼音为：shuō qi lai...

n.生物电极...

Betulaceae的音标：...

n.千流明（光度的单位）...

adj.过时的，不合时宜的...

grammatical的音标：grammatical的英式发音音标为：[grə'mætɪkl]grammatical的美式发音音标为：[ɡrə'mætɪkəl]...

“耳机”的拼音为：ěr jī...

women of childbearing age育龄妇女And the overall contraceptive prevalence rate of married women of childbearing age has reached 83 percent.已婚育龄妇女综合避孕率达到83%.With the average lifespan, marriage and childbearing ages all contin...

“小虾”的拼音为：xiǎo xiā...

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I heard a scurry of footsteps.我听到急促的脚步声.Busy boasts chug and scurry about the river - racy speed boat, stolid, snorting tugs.繁忙的船只在河上鸣叫着来来往往 - --高速快艇和笨头笨脑喘着气的拖驳.The rats scurry around, searching for scraps of food in the...

antihalation的音标：antihalation的英式发音音标为：[æntɪhə'leɪʃn]antihalation的美式发音音标为：[æntɪhə'leɪʃn]...

非洲防己碱...

virtue的音标：virtue的英式发音音标为：['vɜ:tʃu:]virtue的美式发音音标为：['vɜrtʃu]...

其中,釉质龋的研究资料最为丰富, 其次是牙本质, 有关牙骨质龋的资料最少.Structural changes of dental enamel , dentine, cementum and pulpal reactions in carious process are discussed....