极限

The authors investigated the singular limits of stiff relaxation and dominant diffusion for general 2×2nonlinear systems of balance laws, that is,τ=o,ε→ 0, the relaxation time τtends to zero faster than the diffusion parameter ε. If there exists a priori L∞ bound that is uniformly with respect to ε for the solutionsof a system, then the solution sequence converges to the corresponding equilibrium solution of the system.

研究一般扩散占优的2×2双曲平衡律系统奇异松弛极限，用补偿紧性方法，在松弛时间τ比扩散系数ε趋于零快时，即τ=o，ε→ 0时，得到其解的整体存在性一般框架：如果上述系统的解存在对ε一致的先验L∞估计，则其解序列收敛于上述系统的对应平衡状态解。

Yet, as people lost their strength, the abatis became a death line drawn of blood and flesh.

这些临时架起的支楞的木头原是防御骑兵的，对步兵本应起不了多大作用，但人的极限到了，鹿砦前形成一道血肉横飞的死亡线。

The number and stability of the limit cycles of a class of polynomial system with degree n are studied under some conditions by means of the results about Abel equation.

并利用关于Abel方程的这些结果得到了一类n次多项式系统在一定条件下极限环的个数和稳定性。

In the fourth chapter, some general equations are studied, of which Abel equation and some equations that have been intensively studied are the special cases.

第三章利用Abel方程已有的结果来讨论多项式系统的极限环的存在性，个数和稳定性，推广了水树良和蔡燧林的相关工作。

Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

暴露时间延长绝对最大极限条件下可能会影响可靠性。

As growth rates are near the critical velocity of absolute stability limit by the calculation according to M-S theory, it must be considered that deep cells may keep their cellular structure.

当凝固速度近绝对稳定临界转变点时，KGT模型和Hunt-Lu数值模型与试验结果有较大的差别，其原因是这些模型的计算均未考虑到深胞晶在速度高于MS理论计算的绝对稳定平界面极限后仍能保持自身稳定性而造成的； 8。

Now, I have used broadband Internet access, it is the speed limit.

现在，我又用上了宽带上网，那真是极限速度。

We have firstly calculated and compared the different flow rates by applying various aliasing velocities in the patients with mitral insufficiency, mitral stenosis and ventricular septal defect as well, and suggest that the most uitable aliasing velocities for the hemisphierical flow cenvergence calculation were about 46cm/sec for mitral insufficiency, 37cm/sec for mitral stenosis and 58cm/sec for ventricular septal defect respecively.

首次在二尖瓣关闭不全、二尖瓣狭窄和室间隔缺损患者采用不同混叠极限速度分别计算、比较其流量，提出二尖瓣关闭不全、二尖瓣狭窄和室间隔缺损患者最适合半球血流会聚法计算流量的混叠极限速度分别为46、37和58cm/sec左右。

ABS is not as some people want, greatly improving automobile physical properties of the limit.strictly speaking, mainly in the ABS function of the physical limits of performance, guarantee their own vehicle braking manoeuvrability and stability.

ABS并不是如有些人所想的那样，大大提高汽车物理性能的极限。严格来说，ABS的功能主要在物理极限的性能内，保证制动时车辆本身的操纵性及稳定性。

The FLDs of the two blanks—A15754 and SPCC—have been predicted by combining numerical simulations with the ductile fracture criteria. The influence of speed on the FLD was discussed.

应用数值模拟与韧性断裂准则相结合的方法预测了A15754和SPCC两种板材的成形极限图，讨论了速度对成形极限图的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐