Because thalidomide causes severe birth defects if taken during pregnancy, this drug can only be obtained through a special program run by the drug company that makes it.
如果孕期服用沙立度胺可导致严重的先天性缺陷，这一药物只能通过生产它的药物公司的特殊程序获得。
2
Combined with engineering example the characteristics of auger drill and construction defects for special strata are discussed.
结合工程实例，论证了旋挖钻机的特点及在特殊地层的施工缺陷。
3
In this paper, we will introduce the computer programming methods of several special functions which are used in calculation of the surface defects' scattered field by T-matrix method.