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We also give all positive self-adjoint extensions ofsingular differential operators,and all positive self-adjoint operators generated by theproducts of differential expressions 〓,where l is an nth order differentialexpression.The result that each positive self-adjoint operator is not necessarily theform of operator product 〓.This answers an open problem proposed by theauthors recently.

我们也给出了奇型微分算子的所有正自伴扩张形式及乘积微分算式〓所诱导的所有正自伴算子形式，证明〓所诱出的正自伴算子不必须是由算子乘积〓为l所生成的算子）的形式，从而回答了作者新近提出的一个公开问题。

The expressions of TGF-β1 and TGF-β2 were positively related to the development of lung carcinoma.

TGF-β与肺癌的发生、发展、转移密切相关。

Expressions of interest from around the world have been received for the 12- storey tower on the Potomac river.

世界各地的买家都对这幢位于波托马克河畔的12层塔楼表示出了兴趣。

Their gratitude will pour out in open expressions of affection for you.

他们的热情将会为你们的到来而展现。

Their gratitude will pour out in open expressions of affection for you and the great Movement that you guide.

他们会公开表达对奥运的期盼之情了，你可以见证你和伟大的运动间的文化交流。

Their gratitude will pour out in open expressions of affection for you and the great Movement that you guide .

他们会公开表达对奥运的期盼之情了，您们可以见证您和伟大的运动间的文化交流。

Their gratitude will pour out in open expressions ofaffection for you and the great Movement that you guide.

他们会公开表达对奥运的期盼之情了，你可以见证你和伟大的运动间的文化交流。

Their gratitude will pour out in open expressions of affection for you and the great Movement that you guide.http://www.rr365.com

他们会公开表达对奥运的期盼之情了，你可以见证你和伟大的运动间的文化交流。

HL7003 uses the specific sounds of people recognition mode, namely working pattern which distinguishes based on the user own voice input: HL7003 can distinguish 8-12 different pronunciation words and expressions (to be possible to be 8-12 different person's sounds), may control the different power take-off valve 'OR' circuit, completes the recognition which and the control function assigns.

HL7003采用特定人声识别模式，即依据用户自己的声音输入而识别的工作模式： HL7003能识别 8—12个不同的语音字句（可以是8—12个不同人的声音）、可控制不同的输出开关或电路，以完成指定的识别与控制功能。

People think of expressions and think power user.

人们认为的表现形式，并认为电力用户。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。