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- Under the acid free condition, 3 acetyl 2 hydroxy 6 methyl pyran 4 one (8) was obtained and its structure was confirmed by X ray diffraction analysis. 在没有酸催化的条件下,反应生成3乙酰基2羟基6甲基-吡喃4酮(8),并通过单晶X射线衍射分析确定了产物的结构;
- Intratracheal metal stent was inseted under the guidance of X ray TV fluoscope for malignant tracheobronchial obstruction in 7 cases. 本组7例均为食管癌所致气管、支气管狭窄,其中2例为完全性食管梗阻伴食管气管瘘。
- Methods 4 cases of late stage transerse colon cancer combined with malignant obstruction.Self expanding,nichrome metal stents were inserted under the help of X ray and colonscopy. 方法晚期肿瘤伴横结肠恶性梗阻病例4例,在X线监视及结肠镜配合下经肛门放置自膨式镍钛合金金属支架。
- The elimination efficiencies of As and Sb under the above condition are over 90% and 80%, respectively. 在以上条件下,脱砷率达到90%25以上,脱锑率达到80%25以上。
- The negotiating table on the table a b turn the tables on sb under the table wait at tableAny mention of politics is taboo in his house. 在他家里一提政治就犯忌。
- photograph under the X rays X光照片
- She and I can't live under the same roof. 她和我不能住在一起。
- The baby's legs flailed under the quilt. 小孩的两条小腿在被子下面乱动。
- put sb under examination 审查(某人)
- put sb under hack 使某人张口结舌
- The chair sagged down under the fat man's weight. 椅子经这胖人一坐便压弯了。
- A very nice set of glasses came under the hammer yesterday. 昨天拍卖了一套很精致的玻璃杯。
- Tears are secreted by an organ under the upper eyelid. 眼泪由上眼睑下面的器官分泌。
- The landscape unrolled under the speeding plane. 大自然的景色展现在快速飞行的飞机之下。
- The remark make me want to climb under the pew. 这句话使我真想藏在座位下面去。
- The swallows nested under the eaves. 燕子在屋檐下筑巢。
- The government put the skids under the plan by stopping their research grant. 政府停发研究经费让他们的计画半途而废。
- We have found oil under the North Sea. 我们在北海发现了石油。
- There is nothing unconquerable under the sun. 世上没有不可征服的东西。
- He did it under the acquiescence of his boss. 他是在上司的默许下做这件事的。