amino-compound...[繼續(xù)閱讀]

    potassamide...[繼續(xù)閱讀]

    ammonolysis...[繼續(xù)閱讀]

    ammino-complex;ammine...[繼續(xù)閱讀]

    emplacement hole instrumentat ion...[繼續(xù)閱讀]

    emplacement tunnel...[繼續(xù)閱讀]

    emplacement casing...[繼續(xù)閱讀]

    radius of safety...[繼續(xù)閱讀]

    safety block...[繼續(xù)閱讀]

    safety system...[繼續(xù)閱讀]