B. Chemically treat non-galvanized, non-bonderized metal surfaces with a phosphate compound to assure optimum paint adhesion.

对非镀锌的和未涂防腐剂的金属表面进行磷化处理，以保证油漆的最佳附着效果。

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During the last two decades, the existence of a blood-borne virus responsible for non-A, non-B hepatitis was suspected but not identified.

在过去二十年里，存在通过血液传染的病毒负责非甲非乙型肝炎怀疑但尚未确定。

youdao

During the last two decades, the existence of a blood-borne virus responsible for non-A, non-B hepatitis was suspected but not identified.

在过去二十年里，存在通过血液传染的病毒负责非甲非乙型肝炎怀疑但尚未确定。

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