“One or two free admission days at slow times.”“Slow times”here means _____.

对于土壤墒情监测中的样品烘干，有机质含量丰富的土壤可降低烘箱温度，延长烘烤时间，以避免土壤中有机质（）而影响土壤含水量的精度。

It should be apparent that little or nothing is gained by opening a drain at the same time as or after admitting steamThe above sentence probably means （）.

土壤微生物营养类型的多样性包括（）、土壤微生物种群多样性、（）、微生物呼吸类型多样性。

在土壤有机质的转化过程中，最重要的土壤生物是（）。

有机粉尘分为植物性粉尘、动物性粉尘和生物性粉尘。

If necessary to avoid collision or allow more time to（）the situation，a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion．

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

Jitter is an unwanted variation of one or more characteristics of a periodic signal in electronics and telecommunications and（）refers to call issues that cause variations in timing or time of arrival.

MDT为平均停工时间（Mean Down Time），也称为平均延误时间（Mean Delay Time），它等于（）

污染物生物净化的效果与入渗水在地下的停留时间有关，停留时间越长则净化效果越好。地下水位距渗透面大于（）比较适合雨水下渗。

从生物学的观点看韭菜避光后生长嫩白不属于植物病害。