Boy, did this woman know how to put a dampener on your day.天啊，这个女人可真会让人扫兴。Admittedly, the recession has been a bit of a dampener.诚然经济萧条已经逐步在减弱.The incident put a dampener on his birthday party.这件事使得他的生日晚会很扫兴.He used a da...
有时这些碳棒包上一层铜,以增加其导电性.Sometimes the carbon rods are copper coated to improve electrical conductivity.当定购这种硅碳棒时,提供额定电阻是非常重要的.It is important to provide the nominal resistance when ordering.这种硅碳棒的连桥结构正是在此基础上去除了任何焊接部分.The Ele...
A hydrocarbon was known to be either an alkene or alkane.某碳氢化合物已知可能是烯烃或是烷烃.The hydrocarbon must be an alkene.这个碳氢化合物必定是烯烃.The betaine will collapse to the alkene only when these two functions are eclipsed.只有当这两个基团移至重迭位置时...