四元指科举时代州县、府、省和廷试四级考试均名列第一。出自《金史·文艺传上·杨伯仁》
四元 [sì yuán]
adj. quaternary
双语例句原声例句
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它介绍了丙烯酸、丙烯酸脂、苯乙烯四元共聚合成醇溶性聚丙烯酸脂类的方法。
It introduces how to synthesize acrylic acid, acrylate and phenylethene quadripolymer into alcohol-soluble acrylic resin.
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果然，十二天之后支票来了，每篇四元。
And checks they brought, for four dollars each, at the end of twelve days.
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在这方面，四元数的理论和方法或许是合适的。
In this aspect, the quaternion theories and methods perhaps are appropriate.
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They want to get as far away from each other possible, the ideal angle is 120. But what we have here is a four-membered ring, so what angle does 90° that have to be, that bond? 90 degrees.
它们想要尽量远离彼此，最理想的是形成120°键角,但现在是个四元环,所以这键角应该多大？
应用推荐
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