Therefore, CNOOC's proposed drilling fracturing with reasonable sanding recovery method.为此, 中海油提出了钻井压裂适度出砂的开采方式.The surface of the slice is smoothed by sanding.把该切片的表面用沙纸擦光.Ma inly used for sanding the products such...
Its metallation and addition to cyclopentanone proceeded well to 40.其金属取代物能和环戊酮顺利地反应得到40.Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.以单质碘为催化剂合成了环戊酮乙二缩酮.Methyl dihydrojasmonate was synthesized fro...
DDTs and HCHs serum level were detected by EC - ECD .运用GC -ECD 方法检测血清中有机氯农药DDTs和HCHs水平.In DDTs the residual level of p, p?DDTs中p, p?The residual levels of DDTs, HCHs in soil were different with different utilization type...