查询词典 elem
- 与 elem 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Seven type II UV absorbers of benzotriazol structure were prepared by diazotization,coupling,reduction and alkylation.Their structures were characterized by IR,MS and elem entary analysis.
通过重氮化、偶合、还原和烷基化反应合成了7个I型苯并三唑类紫外线吸收剂，并经红外光谱、质谱、元素分析等手段确证结构，其中6个为新化合物。
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候，老师解释《圣经》用两种不同的方法。