| 查看: 414 | 回复: 2 | |||
| 当前主题已经存档。 | |||
| 【悬赏金币】回答本帖问题，作者cjhycy将赠送您 10 个金币 | |||
cjhycy木虫 (正式写手)
|
[求助]
英译汉一小段
|
||
|
请高手帮忙： An alternative method of determining the site impedances is to calculate an impedance estimate for each time-frequency element. This gives an estimate of the instantaneous impedance for any spectral frequency at any time. The total impedance map can therefore be referred to as an ‘evolutive impedance’, just as a TFD spectrum is referred to as an evolutive spectrum. Since the impedance is a site function and is expected to be constant for the recording time, the instantaneous impedance estimates in any spectral frequency can be statistically reduced to a single impedance estimate equivalent to that produced by the stationary analysis of a stationary M T data set.Due to its robustness to non-normal distributions and outliers, the median was used to estimate the impedance amplitudes. The mode was used to estimate the phases, as the wrapping on the unit circle hides the wings of the distribution and even the median will generally result in biased estimates. We can therefore refer to this statistical estimate taken from the evolutive impedance distribution as a ‘stationary impedance’ estimate. |
回复此楼» 猜你喜欢
假如你的研究生提出不合理要求
已经有12人回复
-
实验室接单子
已经有7人回复
-
全日制（定向）博士
已经有5人回复
-
萌生出自己或许不适合搞科研的想法，现在跑or等等看？
已经有4人回复
-
Materials Today Chemistry审稿周期
已经有4人回复
-
参与限项
已经有3人回复
-
对氯苯硼酸纯化
已经有3人回复
-
所感
已经有4人回复
-
要不要辞职读博？
已经有7人回复
-
北核录用
已经有3人回复
2楼2008-09-11 20:32:45
cjhycy
木虫 (正式写手)
- 应助: 0 (幼儿园)
- 金币: 2213
- 散金: 5
- 帖子: 393
- 在线: 72.4小时
- 虫号: 446669
- 注册: 2007-10-29
- 性别: GG
- 专业: 应用地球物理学
3楼2008-09-11 20:54:55