有效限制

The key to feature extraction is to select the optimal feature combination from all the features. In this study, the optimal color feature combination,{/G,(R+4G+B)/6, H variance, S variance}, is selected using genetic neural network at first. Then the main texture features including the mean, variance, energy and entropy of the cooccurrence matrix, the secondary texture features including the maximum frequency number, absolute uniform, inertia and importance of the co-occurrence matrix are extracted.

在此基础上，提出适合多阈值和小目标图像分割的免疫遗传图像分割方法，该方法借鉴了生物免疫系统自调节、抗原识别和记忆功能，并结合了遗传算法对图像进行自适应区域的阈值分割，改善了遗传算法优化复杂问题时存在收敛速度慢和易陷于局部最优的不足，克服了传统阈值分割方法对目标大小的限制，是一种新型的有效的图像分割方法。

As walk-off angle and acceptance angle of beam limit the conversion efficiency and the tunable wavelength range of difference frequency generation, research include effective nonlinear coefficient, walk-off angle and acceptance angle as functions of wavelength, the relationship between conversion efficiency and acceptance angle, and the impact of crystals length on the process of frequency conversion.

由于光束的走离角、允许角限制了转换效率和差频调谐波长范围，研究内容还涉及了有效非线性系数、走离角和允许角与波长的关系，转换效率与允许角的关系，以及晶体长度在频率变换过程中产生的影响。

A long time, China's bond market development lagged behind, lacking the GEM, the product is not rich, investors structure is irrational, restrictions on capital market size, level of development of varieties and the expansion of space, affecting the allocation of resources of capital markets function effectively.

长期以来，中国的债券市场发展滞后，缺乏创业板市场，产品不丰富，投资者结构不合理，资本市场规模，水平，品种的发展和空间扩展影响的资本资源的分配，限制市场有效运作。

The above factors have restricted land resource to be used availably.

因此，极大地限制了该区土地资源的有效利用。

It is necessary to be familiar with the advantages and limitation of each of these modalites.

熟悉每种影像技术的优点和限制，才能使其更有效的应用于临床。

The accuracy and believability of the evaluation results are effectively improved. It ensures to choose effective key management scheme according to the requirement.

结合模糊方法和层次分析法，把评估密钥管理方案性能的主观因素限制在很小的范围内，有效地提高评估结果的准确度和可信度，可根据需要快速选择合适的密钥管理方案。

Therefore the effective application of BP neural network is limited.

因此，BP网络的有效应用受到了一定的限制。

Improved in vitro purging efficiency of residual leukemia may bringabout long-term restoration of Ph-negative hematopoiesis following the clinicalapplication of autologous BMT.

自体骨髓移植是有望治愈慢粒的方法之一，但因缺乏有效的体外骨髓净化措施而限制了其在临床上的广泛应用。

Firstly, the judge can't stop the termination and close-out netting of the derivatives. Secondly, it is important to build up a good social security system and depositary insurance system. Thirdly, the supervisors are indispensable to the financial market. Fourth, an effective market for the managers should be built up. Fifth, the knowledge of the judge should be enlarged.

一是要在对金融衍生品合约的破产处理时限制法官的自由裁量权，二是要完善社会保障体系和存款保险制度，三是要有效发挥金融监管机构的作用，四是要建立一个有效的经理人市场，五是要提高我国法律从业者的整体素质。

In addition to compression skill, to manage the flash memory by an effective method is an important topic too, since this flash memory has two weaknesses. That is, it cannot update in the site and the erasure time in a flash is limited. Therefore, we propose an effectively management method in this thesis.

除了压缩之外，如何有效的管理快闪记忆体，也是一个重要的议题，因为快闪记忆体有两项缺点，就是无法在原地抹除与抹除次数限制，因此，我们在文中提出一个有效管理方法。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。