| 1. | These needs may be classified into two subsidiary sets .
这种需要可以再分为两类。 |
| 2. | Both types are known to be productive of oil and gas .
这两类圈闭是盛产石油和天然气的。 |
| 3. | Most meteorites that have been examined fall into two classes .
大多数检验过的陨石被分成两类。 |
| 4. | Two basic types of clay minerals are present in most soils .
大多数土壤中出现了两类主要的粘土矿物。 |
| 5. | Counters can be generally classified as either serial or synchronous .
计算器通常可分为串行和同步两类。 |
| 6. | The saturn i launch vehicles consisted of two types or blocks .
“土星”发射飞行器包括两类或两个组合。 |
| 7. | The pertinent siloxane compounds contain two silicon hydride bonds .
所说的硅氧烷组合物中，含有两类硅氧键。 |
| 8. | The pertinent siloxane compounds contain two silicon hydride bonds .
所说的硅氧烷化合物中，含有两类硅氧键。 |
| 9. | The shares are usually of two kinds: preference shares and ordinary shares .
股票通常有两类：优先股和普通股。 |
| 10. | Two types of chemical kinetic models have proven especially fruitful .
两类化学动力模型业已证明效果是特别好的。 |
