单词	pi bond-- π-bond-- π bond
释义	pi bond; π bond; π-bondπ键
随便看	first generation electronic computer first generation evaluation first generation expert system first generation image first generation implementation study first generation language first-generation language first generation microcomputer first generation of nuclear power reactor first-generation phototypesetter first generation system first giant branch first glume first go first godet first go off first grade first-grade first-grader first grap global experiment｛=fgge｝ first green formula first group selector first growth first guess first guess field