常見(jiàn)例句Having a valence of four;tetravalent. 四價(jià)的;四個(gè)原子價(jià)的Having a valence of four; tetravalent. 四價(jià)的;四個(gè)原子價(jià)的A gray tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons. 一種灰色的四價(jià)金屬元素,化學(xué)性質(zhì)與鋯相似,發(fā)現(xiàn)于鋯礦物中,因能迅速釋放電子而用作燈絲。A salt containing the negative tetravalent radical Fe(CN)6,used in making blue pigments,blueprint paper,and ferricyanide. 氰亞鐵酸鹽一種用于制造藍(lán)色的顏料、藍(lán)色版紙張以及鐵氰化物的含有負(fù)三價(jià)鐵原子團(tuán)Fe(CN)6的鹽A salt containing the negative tetravalent radical Fe(CN)6, used in making blue pigments, blueprint paper, and ferricyanide. 氰亞鐵酸鹽一種用于制造藍(lán)色的顏料、藍(lán)色版紙張以及鐵氰化物的含有負(fù)三價(jià)鐵原子團(tuán)Fe(CN)6的鹽In this thesis, we concentrate on two subjects relating to group theory: tetravalent half-arc-transitive graphs and integer flows in graphs. 本文的主要內(nèi)容分為兩部分,前半部分是對(duì)4度半弧傳遞圖的研究,后半部分是對(duì)整數(shù)流的研究。 返回 tetravalent