The selectivity of extractant is high and only Au, Pd , Hg ete. are extracted.该萃取剂选择性高,它仅萃取Au 、 Pd和Hg等几种元素.An extractant - screening method with a vapor - liquid equilibrium apparatus in the extractive distillation was i...
这位战士抓住一条非常结实的绳子很快地向高处爬去.The soldier climbed very quickly catching on a very strong rope.剧场: 沿墙分布的防水地灯照亮墙面,光线由墙的根部向高处扩散,使其渐渐隐逝在黑暗中.Theater: waterproof floor lamps along the walls lighten the surfaces of walls.大家欢快地踏上了那条向高...
High electricity bills point to a poor heating system or bad insulation.高额电费开支说明供暖系统不足或建筑隔热材料不良。They lived in happy insulation from brutal facts.他们幸福地生活在不受残酷现实干扰的世界里。A wet suit provides excellent insulation.湿式潜水服有极佳的隔热性能...
Objective To study and shear bond strength of resin - reinforced glass ionomer cement ( RGIC ) on orthodontic brackets.目的探讨两种树脂加强型玻璃离子水门汀对托槽粘结强度的影响.Facial asymmetry and canting dentition are commonly observed at orthodon...
The largest is the Abu Dhabi Investment Authority, established in nineteen seventy - six.其中规模最大的是1976年成立的阿布扎比投资局.An hour later they were still sitting there talking nineteen to the dozen.一小时后他们还坐在那里说个不停。They have ninetee...