| 1. | This would be an example of a stratified sample .
这就是一个典型抽样的例子。 |
| 2. | This type of sampling has been applied exclusively to timber sales .
这种抽样仅用于木材销售。 |
| 3. | It is for a discussion of area determination by transect sampling .
这是有关截距抽样估测面积的讨论。 |
| 4. | Whenever we sample, we always miss some helpful information about the population .
无论在什么条件下进行抽样，总会丢掉一些对于总体有用的信息。 |
| 5. | Multistage sampling in forest inventory is not restricted to fixed-area sampling units .
森林资源清查中，多阶抽样并不局限于固定面积的抽样单元。 |
| 6. | The number of runs is a statistic with its own special sampling distribution and its own test .
连续级数是一个具有独特抽样分布和检验方法的统计量。 |
| 7. | The concept is useful in assessing the large sample properties of econometric estimators .
在评价经济计量估算值的大规模抽样特征时，这是一个有用的概念。 |
| 8. | And, of course, all the alternatives of biareal plot sampling are possible for triareal plot sampling .
当然，两种面积样地抽样的所有可选方案对三种面积样地的抽样都适用。 |
| 9. | Thus setting up a single sample plot in an area can produce some rather bewildering result .
因此，如果在某个地区内只在某单块抽样小区内采样，那末就可能得到某种较为含糊的结果。 |
| 10. | Phytosociological description of vegetation has always been found on field sampling alternating with studies of the releves at home .
植被的群落学描述已经常以野外抽样为基础来取代室内样地记录的研究。 |
