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In this thesis, we consider positive solutions of a degenerate parabolic system with homogeneous Dirichlet boundary condition. It is proved that all positive solutions exist globally iff 12≥abλ, whereλ1 is the first eigenvalue of ??

该论文研究一类具有齐次Dirichlet边界条件的退化抛物方程组正解的性质，证明了所有正解整体存在的充要条件是12≥abλ，其中λ1是具有齐次Dirichlet边界条件的？？

Want to create a key if it doesn't exist, we disable

要创建一个关键，如果它不存在，我们禁用

At present, a lot of problems exist in the legal protections of the disadvantaged groups in our country.

目前，我国在弱势群体的法律保护方面存在诸多问题。

We can get some clue from two great powers which exist in the past and another one normally dominating the current system: the formation, development and extreme disaggregation influence the world structure a lot.

国际关系也经历着类似的霸权体系的演变过程，两个曾经处于和一个现在正世界权力中心国家给我们以一定的启示：霸权国的形成发展和无以复加的衰落对世界格局有着重要的影响。

I will not allow you to disappear, you are not allowed to exist, can not leave.

其实你不是我的，所有的都是我一个人的幻想。

LC filter is an important part of this hybrid reactive power dynamic compensation. The parameters of capacitor and inductive winding of LC filter change during operation with the changing surrounding temperature, the self-heating and the insulation ageing of capacitor, etc. During the installation and commissioning, there may exist errors that can deviate the actual parameters and correspondent harmonic oscillation frequency from the designed value and result in filter disarrangement.

LC滤波器是动态无功补偿装置中的重要组成部分，由于它的电容器和电感线圈参数，在运行过程中会因周围温度的变化、自身发热和电容器绝缘老化等因素影响而发生变化，在安装和调试过程中会存在误差，从而使实际参数和相应的谐振频率偏离设计值，导致滤波器失谐，这就要求对滤波器进行优化设计。

As things stand, Hamas remains excluded because it has refused to meet three laid-in-concrete conditions: a disavowal of terrorism; accepting Israel's right to exist; and going along with previous agreements signed by the Palestine Liberation Organisation, the nationalist umbrella group to which Hamas does not belong, which would imply acceptance of a two-state solution.

就目前看来，哈马斯被排除在和谈之外，因为它拒绝承认三个确认的前提条件：脱离恐怖主义、接受以色列生存权，赞成巴勒斯坦解放组织（巴勒斯坦起保护伞作用的民族主义集团）以前签订的协议（这些协议暗示接受两个国家的解决方案）。

For the data that do exist, there is limited evidence that lumbar discography improves fusion outcomes, and no evidence that it influences disk replacement results.

通过现有的资料，能揭示腰段椎间盘造影改善融合手术结果的证据很有限，且没有证据证实其可以影响椎间盘置换的效果。

Small risks of scarring, infection and discoloration of the skin also exist.

风险小的疤痕，感染和变色的皮肤也已存在。

While the rest of the pack gleefully mined rock's past for their look and attitude, Dengler strode the stage like a poker-faced colossus: living proof that The Boys from the Brazil really did exist (Dengler is, disconcertingly, of German and Colombian descent).

而其余的包兴高采烈地开采石头'的过去对他们的期待和态度，丹格勒大步舞台像一个面无表情的巨人：居住证明，从巴西的男孩确实存在（丹格勒是令人不安的是，德国和哥伦比亚血统）。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我