improver
美[ɪm'pru:və] 网络改进剂；改进者；实习生；促进剂
1 . Aim To synthesize new type of octane number improver for gasoline, methoxyisobutyrate.
目的合成一种新型汽油辛烷值改进剂─甲氧基异丁酸烷基酯.
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2 . Cetane improver . Makes the engine run better at higher compression settings.
碳氢化合物的改进物. 使引擎在高压缩比时运转较为顺畅.
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3 . Cyclohexyl nitrate is an effective cetane number improver for diesel oil.
硝酸环己酯是一种有效的柴油十六烷值改进剂.
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4 . A paving asphalt penetration ratio improver was introduced.
介绍了一种提高道路沥青针入度比的改进剂.
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5 . Some improver play important roles in enhancing the baking quality of the wheat flour.
添加一定的添加剂可改善小麦粉的烘焙品质.
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1.someone devoted to the promotion of human welfare and to social reforms
2.a component that is added to something to improve it;
the addition of a bathroom was a major improvement