Bulking number: American paper measurement of the number of sheets that bulk to 1 inch in thickness under standard pressure.
厚度号数：美国量度一寸内有多少张纸的方法。是在标准压力下一寸厚的纸张页数。
After filamentous bacterium bulking the number of microbiota decreased, and rotifers, epistylis and arcella became the main population.
系统内发生丝状菌污泥膨胀后，微型动物种类减少，主要优势种群为轮虫、累枝钟虫、表壳虫。
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