alkene是什么意思

alkene的音标：alkene的英式发音音标为：['ælki:n]alkene的美式发音音标为：['ælˌkin]...

The nucleophiles include alkene, alkyne, alcohol, acid, amine, water, etc.亲核试剂包括烯烃 、 炔烃 、 醇 、 酸 、 胺 、 水等.The hydrocarbon must be an alkene.这个碳氢化合物必定是烯烃.A hydrocarbon was known to be either an alkene or alkane.某碳氢化合物已知可能是...

A hydrocarbon was known to be either an alkene or alkane.某碳氢化合物已知可能是烯烃或是烷烃.The hydrocarbon must be an alkene.这个碳氢化合物必定是烯烃.The betaine will collapse to the alkene only when these two functions are eclipsed.只有当这两个基团移至重迭位置时...

vi.上煤（coal的过去式与过去分词形式）...

v.使苏醒...

deception的近义词有：deceit, deception, fraud。下面这3个名词均含有"欺骗"的含义：deceit：指歪曲实情，惯于说谎或蓄意欺骗。deception：语气较弱，一般用词，侧重于具体的骗人行为。但有时并无欺骗行为，只是玩弄把戏，故弄玄虚而已。 fraud：一般用于犯罪行为的欺骗，通常指政治或经济活动中的舞弊行为。...

His fame spread far and wide.他远近闻名。Volunteers came from far and wide.志愿者来自四面八方。Its branches spread far and wide.它的枝条向四面八方伸展开来....

n.二极-三极电子管（三极管的阴极同时作为二极管的阴极）...

invariable的音标：invariable的英式发音音标为：[ɪn'veəriəbl]invariable的美式发音音标为：[ɪn'veriəbl]...

n. &adj.衬衫的胸襟，围嘴，恶劣的，衬领，公驴，小鸟...

I've had two runners-up medals with Monaco and AC Milan, but I hope it will be third time lucky and I get a winners' medal with Rangers.我为摩纳哥队、AC米兰队效力时两次都只拿到了亚军，但是事不过三，我希望能为流浪者队拿下一个冠军。The jury is[are] about to ...

“显贵”的英语可以翻译为：igwigs，personages，eminence，high officials ...

“马虎地”的英语可以翻译为：cursorily ...

软垂疣...

“射击学”的英语可以翻译为：[医] ballistics，gunnery ...

sex的近义词/同义词有：gender, persuasion, it, mating, way, sexual, coition, of, screwing, making, procreation, coitus, going, getting, bed, intercourse, life, facts, all, away, fornication, someone, having, to, reproduction, slee...

pirate的一般过去时为：pirated...

把黄油硬糖汁煮开, 关火.Bring the sauce to the boil, and then turn off the heat.豆花或豆腐花:一种用细滑的豆腐配姜味糖汁而成的甜点.A dessert consisting of silky tofu served with a sweet ginger - flavored syrup.母亲也吃了起来, 小声地啜着罐头梨子里的糖汁.She began to eat a bit ...