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》
adj. quaternary
四元数 [数] quaternion ; Quat ; Quaternians ; Quaternion Numbers
四元群 quaternion group ; tetrad
四元活能修护系统 CELL EFFECT
四元系 AlGaInP ; quaternary system ; four component system ; PMN-PNN-PZT
四元合金 [材] quaternary alloy ; four component alloy ; four part alloy
四元树 quadtree
四元醇 tetra-atomic alcohol ; tetrabasic alcohol ; tetrahydric alcohol
四元的 quaternary ; quaternionic ; [数] quadruple
四元基 tetrad
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.
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.
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.
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?
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