The protective link of the frequency converter is one of the key links which guarantee its safe and reliable performance.
变频器的保护环节是保证其安全可靠运行的关键之一。
While it's too soon for the researchers to establish a direct link between the consumption of teaand the absence of heart disease, they do recognize the natural protective properties of thedrink.
虽然研究人员在饮茶和没有心脏病之间建立的直接联系为时尚早，但是他们确实认识到茶的天然保护特性。
Danger 'highlighted 'the researchers from the University of California say the link may be counteracting the known protective effect of the hormone oestrogen on the heart.
这种危险“突出”。来自美国加州大学的研究人员说，该链接可能抵消已知的雌激素对心脏的保护作用。
After controlling for the level of DNA repair capacity, calcium supplements were no longer as protective, but the link between vitamin supplements and breast cancer reduction remained.
在控制DNA修复能力后，补充钙不在具有保护效应，但补充维生素与降低乳腺癌之间的联系还是存在的。
After controlling for the level of DNA repair capacity, calcium supplements were no longer as protective, but the link between vitamin supplements and breast cancer reduction remained.
在控制DNA修复能力后，补充钙不在具有保护效应，但补充维生素与降低乳腺癌之间的联系还是存在的。
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