1)  cheng
1.
In the "cheng+group measure word" sentence type,"cheng" is attached to the front of the group measure word,"cheng" has a selective relationship with group measure words.
在"+集合量词"格式中,""是附着在集合量词前的一个粘着分,整个格式是一个以""为强调手段,以量词为中心的半凝固性结构。
2)  composition
成分组成
1.
The process and product of wood vinegar with different materials and temperatures were supervised to know the characters of preparation process of wood vinegar with wood residues and its composition.
为了解以木材剩余物为原料的木酢液制备特性和木酢液的分组,采用电控炭化反应釜进行调制试验,分析了不同材料和调制温度下的生物组
3)  component
组成成分
1.
The mathematical modeling of tree-ring component was established based on micro-density spectrum analyzing.
通过对树木年轮微密度图谱进行分析,建立了年轮组分数学模型,采用虚拟仪器专用软件LabVIEW为工作平台,设计了TRAS树木年轮分析系统,系统包括数据读取、数据处理、数据存储、结果显示等四大功能模块。
2.
Olive oil has very high nutritional value,its main components are saponifiable substance and non-saponifiable substance,the percentage of saponifiable substance is 98.
橄榄油具有极高的营养价值,其主要组分为可皂化物及不可皂化物,其中可皂化物占98。
4)  composition
组成成分
1.
Study on the composition of lycium barbarum polysaccharides and its effects on the growth of weanling mice;
枸杞多糖-4的组分及对断乳幼鼠生长的影响
2.
Then the composition of LBP-4 was determined.
利用色谱技术分离制备了枸杞多糖(LBP-4),测定了多糖的组分,采用β-消去反应、红外光谱、高碘酸氧化法研究了多糖结构,并采用激光扫描共聚焦显微镜(LSCM)和扫描电镜(SEM)观察了多糖结晶结构。
3.
The chemistry compositions of wheat bran, which come from Heilongjiang province, were quantitatively analyzed in this paper.
以我国黑龙江地区的小麦麸皮为原料,对其化学组分进行了定量分析,实验测得小麦麸皮中灰分质量分数5。
5)  Diagenesis and porotization
成岩成孔
6)  basin evolution and hydrocarbon generation
成盆成烃
1.
Relationship between Sino-Korean orogenic belt traversing Yellow Sea and basin evolution and hydrocarbon generation in North and South Yellow Sea basins;
横贯黄海的中朝造山带与北、南黄海烃关系
参考词条
补充资料:(2+2+2)环加成
分子式:
CAS号:

性质:三个分子(或一个分子的三部分,或一个分子的两部分加另一个分子)提供成环原子数都是2的环加成反应。三个乙烯分子进行(2+2+2)环加成反应生成环己烷。而下列反应则是由一个分子中两个碳碳双键(各两个π电子)和另一个分子碳碳三键(两个π电子)进行的(2+2+2)环加成反应从电子数上看,应是[2π+2π+2π)环加成反应,符合4n+2规则,是对称允许反应。(2+2+2)环加成反应在理论有机化学的研究中有重要意义。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。