selectiveadj.选择的；选择性的；精挑细选的selective call选择性呼叫,选择呼叫selective unit选择基元selective bias选择性偏见selective peak选择峰selective etch选择性腐蚀selective code选择代码selective body选择体selective Rake选择式Rakeselective rule选择规则selective wait选择等待