不久它被氯仿所代替.It was soon replaced by chloroform.用氯仿将有机质提取出来并称重.The organics are extracted with chloroform and weighed.毫无疑问,氯仿是含碳?卤键的最重要的化合物之一.Without doubt chloroform is one of the most important compounds containing a carb...
The article introduces research and application situation of solvent deasphalting - deoiling asphalt gasification - deasphalting oil FCC group technology.介绍了渣油溶剂脱沥青 - 脱油沥青气化 - 脱沥青油催化裂化组合工艺的研究及应用情况....
She climbed the staircase cautiously, holding fast to the rail.她紧紧地抓着栏杆，小心翼翼地爬楼梯。She heard the priest's familiar, flat footfall on the staircase.她听到楼梯上传来牧师那熟悉的单调脚步声。He followed her up a rickety staircase to a squali...
children at an impressionable age处于易受外界影响的年龄的儿童He is in a highly impressionable state.他正处于极易受影响的状态.The child is at an impressionable age.这孩子正处于易受影响的年龄....
Cremation is more common than burial in some countries.在一些国家, 火葬比土葬普遍。Traditional burial and cremation practices have a negative environmental impact.传统的土葬和火葬方式对环境有一定的负面影响.Half of California's deceased opt for crema...