皮肤具有天然弱酸性，pH值为5.5。

Skin is naturally slightly acidic and has a pH of 5.5.

《柯林斯英汉双解大词典》

弱酸性条件会增加变色的程度。

The weak acid condition can cause the discoloration extent.

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该衍生物具有弱酸性，在弱碱中稳定。

The derivative has weak acidity and is stable in weak base solution.

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二是强、弱酸树脂的选型。

Define the resins type of strong acid and weak acid.

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这些气体溶于大气层中的水汽，形成弱酸。

These gases may dissolve in water in the atmosphere to form weak acids.

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在那上面擦点弱酸溶液。

Dab it with a solution of weak acid.

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具有与人体肌肤吻合的弱酸性，温和自然。

With the slight acidity matching the human skin, it is mild and natural.

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空气、压缩空气、水、海水、热水、弱酸等。

Air, compressed air, water, hot water, weak acid, etc.

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空气、压缩空气、水、海水、热水、弱酸等。

Air. Compressed air, water, sea water, hot water, weak acid, etc.

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压缩空气、水、海水、热水、压缩空气、弱酸弱碱等。

Water, sea water, hot water, compressed air, weak acid, weak alkali etc.

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压缩空气、水、海水、热水、压缩空气、弱酸弱碱等。

Water, sea water, hot water, compressed air, weak acid, weak alkali etc.

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