Secondly, a conjecture about the stability for these systems is proposed based on the sufficient and necessary condition of the isolated transfer function being positive real. When the zeros and poles of the transfer functions lie in the imaginary axis, a known conclusion is derived from the conjecture; while the zeros and poles are on the real axis, a new result is obtained and is proved in this note. Finally, according to the conjecture, an example with poles existing on the complex plane is presented, which is not only interesting but also challenging.

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The purified fusion protein was used as antigen to immunize rabbit for further gene function study.

該基因的表達(dá)成功性爱欧美一区二区，為其功能的進(jìn)一步深入研究奠定了基礎(chǔ)。

Therefore, it is significant important for the immunological theory and application to study the characteristics of γδ T cells.

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The deep study about their living status,valus and behaviors should be done imperatively.

對(duì)這個(gè)群體的生存現(xiàn)狀和發(fā)展需要的深入研究亟待開展。

The idea and practice that the governmental work must be investigated is activated and initiated in resisting against the SARS crisis, so the imperativeness of building the mechanism of performance - auditing for government officials is increasingly recognized.

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Based on the aim to make up the impercipience of NO in DN, the role of NO in DN was studied in some depth here through three different ways, i.e. in vitro, in vivo, and the Mendels genetic means.

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At present, in order to promote instruction evaluation and the healthy development of higher education, we must further our research and carry out evaluation ac- cording to levels and catergories, develop evaluation technology, build up evaluation data- base, lower the implicit cost of evaluation, carry out management counsultation in evaluation, cope with the conflicts triggered by the intrinsic defect of evaluation.

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At present, in order to promote instruction evaluation and the healthy development of higher education, we must further our research and carry out evaluation according to levels and catergories, develop evaluation technology, build up evaluation database, lower the implicit cost of evaluation, carry out management counsultation in evaluation, cope with the conflicts triggered by the intrinsic defect of evaluation.

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The undertaking of undergraduate instruction evaluation in our current HEIs has begun to become effective. At present, in order to promote instruction evaluation and the healthy development of higher education, we must further our research and carry out evaluation ac- cording to levels and catergories, develop evaluation technology, build up evaluation data- base, lower the implicit cost of evaluation, carry out management counsultation in evaluation, cope with the conflicts triggered by the intrinsic defect of evaluation.

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Due to the uncertainty or imprecision in user model, we can introduce the theory of rough set to user modeling.

本文在對(duì)人機(jī)交互中用戶建模方法深入研究的基礎(chǔ)上在线看毛片网站免费，作了如下工作： 1。