| 1. | Peat moss is a major constituent of most soil mixes .
泥苔藓是许多土壤混合物的主要成份。 |
| 2. | Cyclobutane exists predominantly in a "butterfly" conformation .
环丁烷主要成“蝶式”构象存在。 |
| 3. | The monoterpenoids are dominant components in the "volatile oils" of plant species .
单萜类化合物是植物挥发油的主要成份。 |
| 4. | The principal constituents of the atmosphere and their abundances are given in table 13. 1 .
大气的主要成份及所含成分的百分比在表131。 |
| 5. | cyclobutane exists predominantly in a "butterfly" conformation, in which the dihedral angle between the two wings is about 20°。
环丁烷主要成“蝶式”构象存在，其中两翼间的二面角大约为20。 |
| 6. | It is a very important ingredient of cough medicine
亦是咳药水中的主要成份。 |
| 7. | Usage : shea butter and microelement etc
主要成份：乳木果、微量元素、维他命。 |
| 8. | That ' s the main constituent of cell membranes
那是细胞薄膜的主要成份。 |
| 9. | Ingredient : verbena and green tea etc
主要成份：马鞭草、绿茶、檀香。 |
| 10. | The main - elements analysis of yield variation
产量变化的主要成份分析 |
