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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A series of formulas for calculating ore loss and dilution on the condition of the single hopper opening are given based on the expectation body principle of drawing ore.

本文根据放出期望体理论导出了一整套单漏口条件下计算损失贫化的公式。

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