The antiwear hydraulic oil had excellent lubricating, antioxidant, thermal stable properties.抗磨液压油具有突出的抗磨性,良好的润滑性 、 抗氧性和热安定性等特点.The development and application of ashless antiwear hydraulic fluid with high pressure are d...
The EP antiwear property is different that it contains different additives.不同的添加剂配伍,聚脲润滑脂的极压抗磨性也不一样.The antiwear & friction reducing mechanism of nano materials was summarized.综述了纳米材料的 抗磨 减摩机理.The antiwear hydraulic oil ...
Taxonomic species are defined on phenetic discontinuities, not on interfertility.分类学上的种是根据表型不连续性而不是根据互交可孕性来确定的.A TAXONOMIC STUDY ON WHITEFLIES IN BEIJING ( HOMOPTERA: ALEYRODIDAE )北京地区粉虱分类研究 ( 同翅目: 粉虱科 )The temptation to...
He studied math in college.他上大学时专业是数学。I flunked math in second grade.我二年级时数学不及格。The hard math problem tripped up most of the students.这道数学难题难倒了大多数学生....