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。
应用推荐