乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.这是冷却,滤出沉淀的二氯碘化铯.It is cool and filter the precipitated caesium dichloroiodide.反应器和输送管线被用少量二氯甲烷洗涤几次.The rea...
All manner of cries were scattered through the din: " We're getting rich -- TWO Symbols of Incorruptibility!在一片喧嚣声中,各式各样的喊叫此起彼伏: " 咱们镇子发财了 -- 两位拒腐蚀的模范!It follows complex rules of layout involving consonants, vowels ...
The evidence was read out to the court in a dull monotone.证据被当庭呆板地宣读了一遍。I found the characters very two-dimensional, not to say dull.我觉得那些人物形象即使不说是乏味无聊，至少也是毫无深度。Broadcast news was accurate and reliable but deadly dull.新闻...
以正庚醛 、 硫代硫酸钠和溴代正丁烷为原料,合成了正庚醛正丁硫醇缩醛.The heptanal butyl mercaptan was synthesized with heptanal, sodium thiosulfate and 1 bromobutane as raw materials.目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件.Aim Enanthal diethyl acetal is prepared ...