极限化

First, we use the time-descrete method for constructing an approximate solution, hence, establish a priori estimates of the approximate solution,we prove the existence subsequently by taking the limit of the approximate solution.

首先， 我们用时间离散化的办法构造逼近解，再对逼近解作必要的一致估计，然后通过对逼近解取极限，证明了弱解的存在性。

Since the Ming Dynasty, that area has been transformed from marginalization to backland. The infiltration of the central power and the massive influx of immigrants began to impact on the traditional agricultural foundation. The ecological agriculture and the domestic animal farming was replaced step by step by ecological agriculture only, with large areas of land reclaimed and forest grassland resources used. This has put great pressure on the ecological environment in the northwest of Guizhou.

自明代以来，黔西北地区开始由边缘化向内地化转变，中央权力的渗透和外来移民的大量涌入，开始日益冲击着黔西北传统农业的根基，使黔西北农业兼畜牧型生态模式逐渐转化为农业为主体的生态模式，大批的荒地被开垦，森林植被和草场资源得到最大极限的利用，这给黔西北的生态环境造成了极大的压力。

The results of first principles calculations show that the carbon content limit in boron carbide crystal is 53 at%, which is consistent with the experimental value.

更多 at％范围变化，第一性原理研究结果表明，碳化硼中含碳量可能的极限为53%，与实验观测结果一致。

These problems include a the results ob-tained from the analysis of the "loss-lock" threshold of the phase-locked loop by themethod of statistical linearization, b static and dynamic errors of the phase-locked dis-criminator, c the effect of carrier suppression filter upon the closed loop response.

本文讨论了锁相式遥测副载波鉴频器设计中的一些实际问题，包括有：a用统计线性化方法来分析失锁的临界抗扰极限的结果；b锁相式鉴频器的静态误差和动态误差，c载波抑制滤波器对闭路响应特性的影响等。

By taking fuzzy performance index as objective function and taking codomain of design parameters and limiting performance index as constraint conditions, an optimization mathematical model is formed.

以模糊化的性能指标为目标函数、以设计参数的取值范围及极限性能指标为约束条件，建立优化数学模型。

Uncertain general MDP with compact parameter set is discussed, and a sub-optimal adaptive control method is proposed.

分析和证明了一般MDP的极限分布和目标函数的连续性，并在此基础上将参数集离散化方法推广到一般MDP，获得了能够以任意给定精度实现次优的自适应决策方法。

In the continuous limit, the quantum one-dimensional extended Hubbard lattice model with half-filled band is transformed into the fermion field.

在连续化极限情况下把量子一维格点扩展Hubbard模型变换为连续的费米场。

Limit cycle flutter of a two-dimensional airfoil in cubic nonlinear aeroelastic system in incompressible flow is investigated.

引 言 在不可压缩流中的二元机翼是一个典型的自激振动的例子，在该系统中引入非线性项一般会产生如Hopf分岔，极限环颤振[1]，周期倍化及混沌等现象。

Rate constant of ONOO〓 formation, which is access to diffusion-controlled limit, is as three times as that of dismutation of O〓〓· by superoxide dismutase, and much faster than that of reaction of NO with hemecontaining proteins, thus demonstrating that ONOO〓 can form as long as NO meets O〓〓· during their diffusion in biological milieu.

ONOO〓在体内生成有较充分的理论依据。ONOO〓的生成速率接近于受控制的弥散极限，比超氧化物歧化酶歧化O〓〓·的速度快3倍，远远超过NO与血红素蛋白的反应速度。

As a teacher for students, you want to encourage the students to really go beyond the limit, and landscape urbanism and landscape infrastructure help to open their eyes.

作为一个为高足办事的老师，你期望勉励高足们真正地超过极限，而景观都市化和景观根本办法正有助于广阔他们的眼界。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。