principal action

基本解釋

The principal emergency action to take with oxidizers is isolation of the leaking cylinder in a well-ventilated area free from any combustibles and ignition sources.
處理同氧化劑有關(guān)的緊急情況應(yīng)該采取的行動(dòng)是把正在洩漏的鋼瓶隔離在沒有任何可燃物和火源的通風(fēng)良好的區(qū)域。
The principal emergency action to take with oxidizers is isolation of the leaking cylinder in a well-ventilated area free from any combustibles and ignition sources.
處理同氧化劑有關(guān)的緊急情況應(yīng)該采取的行動(dòng)是把正在泄漏的鋼瓶隔離在沒有任何可燃物和火源的通風(fēng)良好的區(qū)域。
It does not achieve its principal action in or on the human body by means of pharmacology, immunology or metabolism, but may be assisted in its function by such means;
其用于人體體表及體內(nèi)的作用不是用藥理學(xué)、免疫學(xué)或者代謝的手段獲得，但是可能有這些手段參與并起一定的輔助作用；
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UNESCO: SHSviews
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ECONOMIST: Kill or cure?
While the Soviet Union may have receded for the moment from these demands by settling for a more ambiguous formulation of the resolution and an affirmation that political and diplomatic measures would receive maximum use, the principal Soviet objective seems to have been served: to delay U.S. action and to increase the pressure against unilateral American military steps.
CENTERFORSECURITYPOLICY: Center for Security Policy