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After salt water spray test, their hardness did not change.
经盐水喷雾试验后，其对于硬度并不会有所影响。
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The spray test equipment consists of a mechanical frame work.
喷淋防水试验机由一个机械框架组成工作。
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The spray test equipment consists of a mechanical frame work.
喷淋防水试验机由一个机械框架组成工作。
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