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- fused polycyclic system 稠合多环系
- On the basis of the helix theory proposed by the authors,the relationship between stereostructure and rotatory direction is analyzed for the fused polycyclic compounds. 通过笔者提出的螺旋理论,分析了多环稠合化合物的立体结构和旋光方向间的关系。
- Synthesis of Six-membered Nitrogened Heterocyclic Compounds Fused Polycyclic Rings 六元多环系含氮杂环化合物的合成
- Keywords helix theory;optical activity;configuration;fused polycyclic compounds; 螺旋理论;旋光性;构型;多环稠合化合物;
- The lights fused because the system was overloaded with electrical appliances. 电灯灭了，因线路上用电器超负荷把保险丝烧断了。
- I suppose you also have a caste system in your society. 我想你们的社会里也有一种等级制度。
- The right to dissent is part of our political system. 有持异议的权利是我们政治体制的组成部分。
- Lead will fuse at quite a low temperature. 铅会在相当低的温度下熔化。
- It seems that you've blown a fuse. 看样子你把保险丝烧断了。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- Public opinion was against the old feudal system. 公众舆论反对旧的封建制度。
- We fused the pipes with solders. 我们用焊锡熔接管子。
- The system works on the principle that heat rises. 该项装置是按照热力上升的原理运转的。
- The drainage system has been aged. 排水系统已经老化了。
- They called for a radical reform of our tax system. 他们要求对税收制度进行根本改革。
- Containing molecules consisting of two fused rings. 二环的包含由两个结合的环组成的分子的
- Changing a fuse is one of those fiddly jobs I hate. 我最不愿意干换保险丝这类活儿了。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- Don't irritate her, she's on a short fuse today. 别惹她，她今天动不动就发火。
- He's mute on the subject of social system. 他对社会制度的问题保持沉默。
