protective agent

常見例句

The quality of the protective agent must pay special attention to.
防護(hù)劑的品質(zhì)一定要特別注意。
The action of calcium as a protective agent against inimical ions is not a highly specific function.
鈣作為一種保護(hù)劑以抗御有害離子的作用，并不表現(xiàn)高度的特效性功能。
dict.site
For example, if a plant needs protection against a leaf-feeding pest, the protective agent need not also be present in the grain (that's harvested for food).
例如，如果一種作物需要保護(hù)免于遭受一種以葉子為食物的害蟲的侵害，保護(hù)劑不需要在（作為糧食而收割的）作物中出現(xiàn)。