Jeff had shopped extravagantly for presents for the whole family.杰夫花了很多钱为全家人买礼物。What Jeff did was to anticipate my next question...杰夫预先回答了我的下一个问题。Jeff: Of course, they have strange appearances, such as duckbill , millie,...
And DPR altered little when the concentration of methanol increased.当甲醇浓度增大时,DPR则变化很小.The characteristics of construction safety, economy and irradiation utilization of DPR - 3 heating reactor ( Deep Pool Reactor ) are i...