Sampling hole has many small holes to reduce puffball superposition and reduce error of animalcule count.

采集口为无数微孔，减少了尘菌重叠，降低了微生物计数错误。

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Sampling hole has many small holes to reduce puffball superposition and reduce error of animalcule count.

采集口为无数微孔，减少了尘菌重叠，降低了微生物计数错误。

youdao