物质和意识形态上的障碍在东欧已不复存在。Physical and ideological barriers had come down in Eastern Europe.脱咖啡因的咖啡仍含一些刺激物和其他可能致癌的有害物质。Decaffeinated coffee still contains some stimulants and other nasties linked with cancer.她喜欢婚姻生活带给她的物质享受。Sh...
成功的应用实例包括少量喷撒 、 泡沫剂及农药颗粒剂的土壤施用.Examples of successful application improvements are low volume sprays, foams, and granular soil applications.泡沫剂可以减缓气驱中的气窜和重力超覆现象.Foam can retard gas channeling and gravity override in gas ...