The unit is comparatively easy to install and cheap to operate.这种设备比较容易安装而且用起来便宜。They will install a heating and lighting system in our house.他们将在我们家装上供热供电系统.It was said that he went to great expense to install a lift in...
Elastic cardo is used to reduce the cost for repair and make install easy.采用弹性轴节,安装、拆卸方便,维修费用低.Easy to install over either round or oval ducting.3易于安装的不是圆形或椭圆形的管道之上.We remove these rear controls and install them as canar...
Isomerization occur during bromine reaction, that is mean secondary allylic configuration changes into primary allylic configuration.在溴化反应过程中存在分子结构重排, 即溴代仲位烯丙基构型向溴代伯位烯丙基构型发生转化....