This test ensures that the enclosure will not react chemically with your photos.

摄影活性测试能确保封套不与您的照片发生化学反应。

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The aggressive salts contain Magnesium Chloride, which can move at rates 100 times faster than Halite and could chemically react with cement.

强侵略性的矿物盐一般都含有氯化镁组分，该成分在溶液中的移动速度比氯化钠要快100倍以上并可与水泥浆发生化学反应，影响泥浆体系的使用性能。

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The calcium carbonate modifier has more action points and can chemically react with calcium carbonate, thereby having better effect than the traditional stearic acid modifier.

用于碳酸钙改性剂，作用点多，与碳酸钙形成化学作用，改性效果显著且优于传统硬脂酸类改性剂。

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The latter process occurs at low temperatures when rocks rich in the minerals olivine and pyroxene react chemically with water, releasing methane.

BBC: Martian methane mystery deepens

If the toilet is not working, one has to go into a baggy that has ampules that can be crushed to chemically react with the waste to prevent things like offgassing and bacterial growth.

FORBES: How Does The Restroom In The International Space Station Work?