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1)  complete quadrilateral
完全四线形
2)  complete quadrangle (line)
完全四点(线)形
3)  complete quadrangle
完全四点形
1.
The method of reconstructing a trirectangular tetrahedron from a stereo projection made up of two complete quadrangles is put forward.
研究了体视投影的复原问题,提出了根据两个完全四点形为体视投影恢复三直角四面体的方法。
2.
In this paper,we have proved several elementary geometry propositions by using the harmomic property of complete quadrangle,and thus manifested its application in elementaru geometry.
利用完全四点形的调和性质证明了几个初等几何命题,从而体现了它在初等几何中的应用。
3.
According to definitions of the complete quadrangle,the harmonic point range and the harmonic line pencil,the proposition of Desargues,the converse proposition of Desargues and the proposition of harmonic conjugates can solve the problems of 3-line concurrence,4-line concurrence,3-point collineation,4-point collineation,5-point collineation,and 6-point collineation.
由完全四点形、调和点列或调和线束的定义,Desargues命题、Desargues逆命题或调和共轭定理,解决了三线共点、四线共点,三点共线、四点共线、五点共线或六点共线的问题。
4)  complete quadrilateral
完全四边形
5)  complete star connection
完全星形接线
1.
The sensitivity is analysed and discussed during two phase short circuit, after Y,d11 transformer,of relays on three phase complete star connection and two phase incomplete star connection.
就三相三继电器完全星形接线与两相两继电器的不完全星形接线在Y ,d11接线变压器后发生两相短路时的灵敏度进行了分析与探讨 。
6)  incomplete star connection
不完全星形接线
1.
The sensitivity is analysed and discussed during two phase short circuit, after Y,d11 transformer,of relays on three phase complete star connection and two phase incomplete star connection.
就三相三继电器完全星形接线与两相两继电器的不完全星形接线在Y ,d11接线变压器后发生两相短路时的灵敏度进行了分析与探讨 。
补充资料:1,3,5,7-四甲基四乙烯基环四硅氧烷
分子式:[CH3(CH2=CH)SiO]4
CAS号:

性质:沸点224~224.5℃(101.06kPa)。熔点-43.5℃±0.1℃。相对密度0.9875。折射率1.4342。与八甲基环四硅氧烷性能相似,在微量硅醇钠、硅醇钾或少量浓硫酸作用下,Si-O-Si键断裂重排,生成直链的聚硅氧烷和环状硅氧烷的混合物。  Si-CH=CH2键在有机过氧化物存在下,可进行游离基聚合反应。在铂催化剂存在下,可与Si—H键发生加成反应。可由甲基乙烯基二氯硅烷的水解料催化裂解来制取。用来合成有机硅中间体及高分子化合物提供活性交联点之用,是制备硅橡胶不可缺少的原料之一。

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