由于发生了不幸的意外，我知道消息的时候已经晚了一天。Through some unfortunate accident, the information reached me a day late.我对这条消息的总体反应可以用“哼儿哈儿”来概括。My general reaction to this news might be summed up as "ho-hum"他不肯说是从哪儿得到这个消息的。He wouldn't s...
制造低温丁苯胶的两个典型配方示于表1.3.Two typical recipes for the preparation of cold SBR are shown in Table 1.3.结果表明,燕化公司研究院研制生产的YH -05 羧基丁苯胶乳各项性能指标与Dow-675、SD -656 相当.The results showed that behavior of YH - 05 similar to Dow - 675 and...