其金属取代物能和环戊酮顺利地反应得到40.Its metallation and addition to cyclopentanone proceeded well to 40.以单质碘为催化剂合成了环戊酮乙二缩酮.Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.比较研究了三种含苄叉环戊酮基团的新型香豆素类光敏染料.Absorption spect...
The potential impacts of deep sea mining on epipelagic ecosystem are here analysed and reviewed.根据现有试验规模及资料分析了深海采矿对上层海洋生态系统的潜在影响....the forest ecosystem.森林生态系统An evaluating index system is established for degenerated est...
墨汁颗粒附着在气泡上，浮到表面上。Ink particles attach themselves to air bubbles and rise to the surface.氧气泡a bubble of oxygen玻璃含有气泡,使它质量降低.The incorporation of air bubbles in the glass spoiled it....
The Tropic of Cancer is the most northerly latitude in the Northern Hemisphere.在北半球,北回归线的纬度最高.South bay island Be located in semi - tropical, Tropic of Cancer is traversed.南澳岛地处亚热带, 北回归线横贯.His hometown is located in the ...
She passed the needle through the rough cloth, back and forth.她一针一针地缝那块粗布。The prosecution and defense were bandying accusations back and forth.原告和被告你来我往，互相指责。Max zips back and forth across the living room.马克斯在客厅里快速地来回走动。...
The accused men have been given relatively light sentences.被控告的这些男子受到相对较轻的判决。The accused is alleged to be a member of a right-wing gang.据称被告是某右翼组织的成员。The accused was found innocent.被告被判定无罪。...
The arbitrator issued a final decision regarding the meaning of the contractual terms.仲裁员签发了有关合同条款含义的最后裁决.If the donor withholds performance, the donee may terminate the contractual relationship.赠与人中止履行的, 受赠人得终止合同关系.This...