查询词典 peg float

Presence of multiples leads to poor quality in main stages of offshore seismic data processing, such as velocity analysis, stacking and imaging. Three basic multiple attenuating methods are reviewed; and a more effective multiple attenuator is achieved by joining them. As the first step, shot or receiver records are extrapolated by wave-equation datum algorithms. The extrapolation will establish a model of waterbottom multiples. Waterbotton multiples will then be removed by subtracting the extrapolated records from the original records. After that, predictive deconvolution is used to attenuate the multiples created by source ghost. Finaly, RADON transformation is adopted to separate peg-leg multiples and residual water-bottom multiples from the original data in the τ-p domain.

地震勘探尤其是海上地震勘探中存在着各类多次波，由于多次波的存在严重影响了速度分析、叠加、偏移成像等地震资料处理，海上多次波主要有全程多次波和层间多次两大类，为了压制海上不同类型的多次波，本文首先分析波场外推、预测反褶积和拉东变换衰减不同多次波的理论基础，然后联合采用这些方法，分别衰减全程多次波和层间多次波；即：首先对炮记录或者接收点记录进行波场外推，建立海底多次波模型，预测并减去全程多次波，然后利用预测反褶积衰减掉周期性明显的多次波，最后将数据转换到τ-p 域，用拉冬变换根据同一时间多次波和有效波在速度等方面的差异，进一步分离层间多次波和剩余的全程多次波，并在该域中切除分离出的多次波，从而实现联合多次波衰减处理。

In the present study, four derivatives of PEG with different activation groups, and several PEGs with different molecular weights were covalently bound to porcine hemoglobin.

比较了4种方法活化的PEG衍生物对猪血红蛋白的修饰效率、修饰产物的携氧功能和稳定性等。

The Government agreed to peg down the retail price of food .

政府同意限制食品的零售价格。

It's proving very difficult to peg him down to a definite date for completion.

要规定他限期完成确是十分困难的。

John is so arrogant.He needs to be taken down a peg .

他太自大了，需要杀杀他的威风了。

I'll take you down a peg before I get done with you.

我非得刹一刹你的威风，不然我和你就没个完。

I had to take him down a peg this morning.

今天早晨我不得不打打他的架子。

Their pride in their achievements has come down a peg.

他们对自己的成就不再觉得那么了不起了。

It is proving very difficult to peg him down to a definite date for completion .

要规定他限期完成确是十分困难的。

Compared with Mary, his pride in his achievements has come down a peg.

和玛丽相比，他觉得自己的成就不再那么了不起了。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。