小缺点

Therefore, for the continuous beam bridges which adopt the cantilever erection method, the marked elevation of dado must be measured accurately in the stage of prefabricating beams, and the elevation of the geometry of bridge must be calculated correctly.

如果桥梁施工线形控制不严，桥梁的线形就会不顺，合拢段就会出现不允许的高差，将会影响到预应力钢束的穿束工作，增大钢束张拉阻力；悬臂拼装施工方法还有线形可调性小等缺点。

There exists some defectiveness in observer-based controllers such as high gain, deteriorating recovery degree in face of nonminimum phase systems.

观测器型控制器存在着控制器增益高，对非最小相位系统的恢复程度较差等缺点。

Due to the numerical aperture of DVD pickup is large, and the characteristic size is small, the error of scalar diffraction theory is very large. The in-depth research work on vector diffraction of optical disc was carried out. The optical disk model was analyzed use the rigorous coupled wave theory, and some significative conclusion was obtained. These conclusions can use for guidance of scheme designing of optical pickup.

针对DVD读取头光学系统数值孔径大，光盘特征尺寸小，标量衍射理论误差大等缺点，采用矢量衍射理论对光盘的衍射进行了深入的研究，首次在光学读取头领域中将耦合波理论应用到光盘的衍射分析中，得到了一些有意义的结果，这些结果可以用来指导光学读取头方案的设计。

Populus has several advantages as a model system. But because of the shortcomes that the chromosome of Populus are small, dioecism, without perianth, trunk of the tree is tall, the period of infancy is 6～7 years.

杨属植物作为林业研究的模式植物，具有优良的实验特性，但是由于杨属植物的染色体小、雌雄异株、无花被、植株高大、幼年期长达6～7年等缺点，给实验研究带来许多不便。

Based on much resolutional analysis wavelet threshold de-noising method ,an improved threshold function is proposed. it overcomes the shortcomings of the hard threshold with discontinuous function ang solves the problem of the permanent bias in soft threshold function,and it is more elastic than the soft threshold and hard threshold function.

在多分辨分析小波阈值去噪的基础上，采用了一种改进的阈值函数，克服了硬阈值函数不连续的缺点，解决了软阈值函数中存在的恒定偏差，并且具有软硬阈值函数不可比拟的灵活性。

It can enhance generalization ability of neural network and distill the rules automatically by using the new method.

为了避免单纯使用神经网络易陷入局部极小的缺点，本文还提出了一种融合遗传算法？？

The collector in dynatron of smooth Ou photosensitive or blast off extremely direct receive laden resistor to be able to satisfy lesser laden requirement; to be in of dynatron of smooth Ou photosensitive blast off extremely add dynatron enlarge drive, the push-pull type circuit that through two photoelectricity coupler makes and feedbacking through increasing photosensitive dynatron base, reach stronger laden capacity already, increased the interference rejection capacity of power interface, the outputs power inadequacy weakness that overcame smooth Ou, raise the switch rate of smooth Ou again, overcame the distributinging capacitance as a result of existence of smooth Ou oneself, cause an effect to transmitting speed.

在光耦光敏三极管的集电极或发射极直接接负载电阻即可满足较小的负载要求；在光耦光敏三极管的发射极加三极管放大驱动，通过两只光电耦合器构成的推挽式电路以及通过增加光敏三极管基极正反馈，既达到较强的负载能力，提高了功率接口的抗干扰能力，克服了光耦的输出功率不足的缺点，又提高光耦的开关速度，克服了由于光耦自身存在的分布电容，对传输速度造成影响。

An integrated geophysical technology,combing the main method of ground high resolution electric sounding and ground stable Ray wave technology and the supplement method of ground shallow seismic prospecting and discharge monitoring technology,is used in Huangling fast mural water project.

使用地面高分辨电测深法与稳态瑞利波法为主，浅层地震和流量监测为辅的快速综合物探技术，对黄陵一号井小煤窑突水通道进行多方法、多参数、多方位聚焦快速综合探测，克服了单项物探多解性的缺点，大大提高了探测准确度。

The emulations and experimental results indicate that the theoretical model combined the neural network and genetic algorithm not only can conquer the disadvantage, which network is prone to enmesh the partial minimal error, but also utilize the powerful artificial intelligence of neural network.; This model provides a new method and idea for the monitor systems management, meanwhile it also offer a new method for solving the problems of the undetermined information processing; This model has powerful studying function, high accuracy, and strong practicability, so it has promoted value.

仿真及实验结果表明：由于此数学模型是将神经网络和遗传算法相结合应用在井下的监控系统中，因此即克服了神经网络容易陷入局部最小误差的缺点，又利用了神经网络本身强大的人工智能；该模型不仅为煤矿监控系统管理提供了一种新方法和新思路，同时也为解决不确定性信息处理问题提供了一种新的尝试和手段；该模型学习功能强大，精度较高，实用性强，具有很好的推广价值。

Based on a Hopfield neural network mode for combinational circuit test generation, a test generation algorithm with global searching ability is proposed. This algorithm is the combination of chaotic searching with gradient algorithm. By means of the inherent stochastic and ergodic property of chaotic searching, the problem of being trapped in local minimum of gradient algorithm can be solved.

基于组合电路测试生成的离散Hopfield神经网络模型，将混沌搜索与Hopfield网络的梯度算法相结合，利用混沌搜索的内随机性及遍历性来克服梯度算法易于陷于局部极小的缺点，形成一种具有全局搜索能力的测试生成有效算法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。