The seal has an almost microscopic clearance between the faces and a small amount of liquid (5 or 10 drops per minute) is allowed to leak out.
机械密封在两密封面间有极小的缝隙，容许少量液体(每分钟5- 10滴)泄漏。
Samantha Price: The blue whale which is –we think –is probably the largest ever living mammal… eats these tiny, almost microscopic krill and plankton.
萨曼塔·普莱斯：蓝鲸可能是有史以来最大的哺乳动物，它们的猎物——磷虾及浮游生物——体型却非常微小，几乎用显微镜才能看见。
Children with s. haematobium almost always have microscopic blood in their urine and this can be detected by chemical reagent strips.
埃及血吸虫病患儿的尿中几乎始终有微量血，为此可用化学试剂条进行检验。
Children with s. haematobium almost always have microscopic blood in their urine and this can be detected by chemical reagent strips.
埃及血吸虫病患儿的尿中几乎始终有微量血，为此可用化学试剂条进行检验。
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