性能不足

Based on a lot of experiments, it shows the distinct error between classical theory curve which express the relation of cell diameter, cell density and foam tensile strength , tensibility tensile product and re-spring degree and experiment curve. It also can＇t explain the relation of hole degree , area of cell wall with above four mechanics parameter. But the sub-cluster scale theory was demonstrated successfully to explain the relation of cell structure and foam mechanics property on different mold temperature, mold pressure, mold period and different chemical blowing agent, blowing activator content.

通过大量的实验结果理论分析表明：以往的经典理论存在着很多不足之处，它不能有效地解释孔径、泡孔密度与抗拉强度、断裂伸长率、断裂功、及回弹率之间的理论曲线与实验曲线之间的偏差，也不能解释空隙度、泡孔壁厚与上面四者之间的关系，而群子标度理论则成功地论证了在不同模压温度、模压压力、模压时间及不同用量发泡剂、发泡促进剂条件下泡体力学性能与结构之间的相关性。

This position can modulate the biological function of the central nervous, therefore to get good result of storage and voiding.

此法可较好地调节排尿中枢神经系统的生理功能，取得良好的控尿及排尿功能，其主要的不足之处在于对仪器性能要求较高。

For solving the problem of raw material shortage of viscose fiber production and making full use of hemp xyloid stem,the structure and properties of hemp xyloid stem based viscose fiber were discussed by using advanced testing instruments such as SEM and X-ray analyzer.

为了解决粘胶纤维生产原料来源不足，充分利用大麻杆芯制备粘胶纤维，以大麻杆芯粘胶纤维为研究对象，采用扫描电镜、X射线等测试方法对其结构与性能进行探讨。

The research on fluorinated polyurethane-acrylate emulsions were reviewed in this article,including the aspects of categories,structure characteristics,synthesis methods and properties.

介绍了目前国内外氟化聚氨酯-丙烯酸酯乳液的研究现状，综述了已见报道的氟化聚氨酯-丙烯酸酯乳液的种类、结构特点、合成工艺以及性能，并指出了国内相应领域研究的不足和今后研发的重点和方向。

There are some shortages in paper-tube adhesive ,added intercalating composite fillers can get better performance.

纸管胶在使用过程中存在着一些不足，添加改性填料能改善其性能。

So they may not work well in practical case with limi-ted samples and easily lead to the problem of overfilling.

鉴于传统方法的诸多不足，必须尽快探索出一些新的具有良好性能的分类方法。

According to the test result on performance comparison among imported high-performance lifting chain, steel wire and domestic lifting chain, which was organized by Beijing Railway Administration, the essay analyzes the advantages and disadvantages of applying imported lifting chain in loading and unlading operation, and points out the safety notices of application.

摘要根据北京铁路局组织的进口高性能吊链、钢丝绳及国产吊链的性能对比试用结果，分析了进口吊链在装卸作业中应用的优点与不足不处，提出了使用时的安全注意事项。

The shortcomings of a submerged dredge pump for wheel dredge boat are pointed out based on a research of its suction capacity.

对某斗轮式挖泥船水下泥泵吸入性能进行了研究，提出了该船目前存在的缺点和不足。

Section 1 discusses the advantages of medical film printer and USB, and put forward one elementary design scheme of the system. The principle of laser printer and the holistic design scheme of system are presented detailedly in Section 2, while Section 3 expounds the technology of USB. Section 4 discusses design scheme of transfer system of the laser printer - includes the development of USB device and CPLD. The test of holistic laser printer and effect picture of medical image are presented in Section5. In the end, a review of this system and some bugs are put forwards at present.

本文主要分为六个部分，第一部分讨论了医用胶片打印机和USB总线技术的特点和发展趋势，并提出了系统的初步设计方案和研究意义；第二部分描述了医用激光胶片打印机的背景、工作原理和系统的各个组成部分；第三部分描述了通用串行总线2.0版(USB2.0)的通信原理；第四部分详细介绍了打印机数据传输系统的设计——包括USB设备的开发和CPLD的硬件和软件设计，并对这个传输系统的性能进行了分析；第五部分介绍了整个打印机的测试结果和实际打印医学影像的效果图；最后对本文做出总结并提出了不足之处和参考价值。

Evaluated the working principle, construction and performance of the key parts of the fluidized bed system on the basis of problems in fast pyrolysis experiment in this article. Advanced shortage and betterment project, which will offer guide for designing the same sets fitted for the situation of our country.

通过试验研究的实际运行过程中遇到的问题，对所自行研制的试验设备的关键部件的工作原理、结构和性能进行了详细评价，提出了该试验设备的不足之处和改进方案，为今后设计研制适合我国国情的同类设备及进一步放大提供指导。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。