In addition , lapping agent and erodent are kept from contaminating samples during grinding and erosion.能够防止样品在研磨和侵蚀的过程中研磨剂和腐蚀剂的污染.In lapping up a fur, they always put the inner side outwards.卷毛皮时, 他们总是让内层朝外.He was caugh...
He was caught out while lapping a slower rider.他在套圈超越一位落后的车手时出了错。The only sound was the lapping of the waves.只闻浪涛拍击之声。In lapping up a fur, they always put the inner side outwards.卷毛皮时, 他们总是让内层朝外....