During each acid pickling operation a sample piece of same material shall be kept inside the inhibited acid solution in the tank to check the quality of cleaning.
在每次酸浸操作中，应该将同种材质的试样放置在加入缓蚀剂的溶液内检查清洁程度。
We expect that the quality be exactly the same as the original sample you've provided.
我们要求品质与贵公司提供的原样完全一样。
We expect that the quality be exactly the same as the original sample you've provided.
我们要求品质与贵公司提供的原样完全一样。
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