闪电在货车周围炸开时，情景异常壮观。It was unbelievably dramatic as lightning crackled all round the van.为重现当时的情景，他们做了大量细致的工作。Elaborate efforts were made to reconstruct what had happened.白日梦可能像是真实情景的预演。Daydreams may seem to be rehearsals ...
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...
The preparation conditions of calcium alginate microcapsule and influence factors were studied.研究了海藻酸钙微胶囊的制备条件和影响因素.ConclusionBlend microspheres with good performance were prepared with alginate and starch.结论以海藻酸钠和淀粉为原料制...