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The solution has been prediluted.
这个溶液已经预先稀释过了。
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The samples are applied 6 times to the plate as 1:2 prediluted single points as well as twice as a dilution series for comparison purpose.
板上浓度为1：2的预先洗脱液单点的量为1倍量，在其上滴样本的量为6倍量，同时用一个两倍于稀释组的样本作对照。
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