Diaryl nitroxides are even more stable than the dialkyl nitroxides.二芳基氮氧化物自由基比二烷基氮氧化物自由基还要稳定.AIM To offer reference for further research of 2, 4 - diaryl - 1 , 3 - dithiolane compounds.目的为进一步设计和研究2, 4- 二芳基 -1, 3-二硫戊环类化合物...
翻下来缝外侧的边。Turn under and hem the outer edges.火车轮外侧的金属轮箱便压在这根铁轨上.Metal shoes outside the wheels of the train then press downwards on this rail.细粒粘土可以沉积在天然堤外侧的隐蔽湾中.Fine - grained clay may settle out in the sheltered bays on...
将金属压进钢型中以使金属成型的过程.A forming process that presses metal into or through cold drawn wire.金属底版有铅空排版 、 浇铅版、钢型刻版 、 钢板刻版等多种.Metal bottom slab has empty interpuntion, cast - in - print of a type of block , steel , steel block....
Comparison interventions included non - iodised salt, iodised water, iodised oil, iodation with potassium iodide versus potassium iodate.作对照的干预措施包括无碘食盐 、 碘化水 、 碘油, 以及碘酸钾与碘化钾作对照.The pound continued to sag despite four int...