Crankshafts, one of the major parts of piston engines, are motionpistonmotion.曲轴是活塞式发动机的主要零部件之一, 加工工艺复杂、要求高.Automobile and motorcycle spare parts - crankshafts, connecting rods, shafts, power steering shafts.汽机车零件 - 曲轴 、...
结论:胃左静脉分流指数是评价食管静脉重度曲张的好指标.Our results suggest that the LGVSI is aDoppler ultrasound parameter in evaluating severity of esophageal varices.目的探讨内源性一氧化氮与肝硬化食道 静脉 曲张的关系及临床意义.Objectives To study the relation of nitric oxide...
Electrophoresis is a technique that separates macromolecules according to their net electrical charge and shape.电泳是根据分子的静电荷和形状分离大分子的技术.Methods: Cross electrophoresis of agarose - starch mixed gel was used in these experi...
There wasn’t a blemish on his body.他身上一块疤也没有。He wasn't about to blemish that pristine record.他本不想去玷污那清白的过去。He was pilloried, but she escaped without blemish.他受到公众的批评, 她却名声未损地得以逃脱.The police say the suspect has a sli...
A contented mind is a continualperpetual feast.知足常乐He may well be contented who need neither borrow nor flatter.不需奉承不借钱,知足常乐赛神仙。He won't be contented until he's upset everyone in the office.不把办公室里的每个人弄得心烦意乱他就不会...