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Abstract: Some shortcomings of current ultrasonic thickness gage arediscussed. And some measures for improving the transducer, circuit and other parts of the gage are put forward.
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文摘:阐述了目前超声测厚仪的一些不足，并在探头和电路等方面提出了一些改进措施。 |
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Abstract: Some shortcomings on the design of vertical parting hot box are reviewed briefly , and optimization of the design of parting line, direction of shoot sand, push core mechanism ,taking core mechanism, negtive parameter of parting line, and enlarg
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文摘:简单评述了垂直分盒热芯盒设计中目前尚存在的一些不足之外，较细地阐述了分盒面、射砂方向、射砂口面积、顶芯机构、取芯机构及分盒负数，凸台尺寸放大制作等的优化设计技巧和优选方案。 |
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Abstract: Some ways of antiinterference about microcomputer test system for motor is presented,such as electricity supply,shield,ground connection,information connection,information passageway in hardware and the fault-tolerant techniques and digital filt
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文摘:对电机微机测试系统提出几种抗干扰措施.通过对供电、屏蔽与接地及信息通道等硬件的抗干扰设计和在系统软件中采用数字滤波及容错技术，使原系统性能稳定，运行安全，以增强其抗干扰能力. |
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Abstract: Sonar is important equipment of submarine.In this paper,based on analyzing the working principles of Sonar.The simulating principle and technology channel are described.The key technology of simulating is researched.The result of simulating is g
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文摘:声纳是潜艇重要的观通和侦察设备，该文是在分析声纳工作原理的基础上，介绍了潜艇声纳的仿真原理和技术实现途径，并对其中的一些关键问题进行了研究，给出了仿真结果。 |
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Abstract: Species diversity is an important part of biodiversity.
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文摘:物种多样性是生物多样性研究的一个重要层次。 |
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Abstract: Spectrophotometer 723 were introduced briefly in the paper.In order to apply it into measurement of pepsin thickness,we add temperature control system and pipe equipment into the instrument.And we redesigned the board of instrument and reedited
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文摘:简单介绍了723型可见分光光度计，在基本保持仪器原有机械结构的基础上，增加了温控系统和吸液装置，并对原仪器主板电路和程序进行了重新设计和编制，使它成功地应用在胃蛋白酶浓度的测量上。 |
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Abstract: Spraying chemical controlling matter(drought-resistant agent)on wheat blade in medium-late growth period.We found it influenced transpiration rate,water-retaining capacity,containing water content of dry weight,seeping conductive rate,chlorphyll
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文摘:小麦生育中后期叶面喷施化学调控物质(抗旱剂)，对蒸腾速率、保水力、干重含水量、外渗电导率和叶绿素含量等均有不同程度的影响，明显地改善了小麦的水分状况，降低了电解质的外渗率，有明显的保绿延缓衰老的作用，增产效果显著。 |
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Abstract: Starting from the actual condition of satellite operating system,the scheme of time-event-triggered fault-tolerant real-time satellite operating system is presented and the implementation of this scheme is discussed in detail.
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文摘:从卫星操作系统的具体情况出发,提出了时间、事件混合驱动的卫星实时容错操作系统设计方案，并且就该设计方案的实现细节和可行性、安全性进行了讨论。 |
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Abstract: Starting from the dynamics-equation, by employing the matrix theory, the general method to the relative motion of freedom vibrators is delivered.In addition, the physical significance of the results is given,and it is testified that any possible
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文摘:针对动力学方程，利用矩阵理论，分析研究了多振子耦合振动系统的运动，并给出了一般性解法，证明了多振子耦合振动系统的任何一种可能的运动都可以用各阶主振动的线性组合来表示. |
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Abstract: Starting with the status of the medical insurance fund in Li Cheng District, Pu Tian City, this paper analyses the negative result because of the shortness of several factors.
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摘要:本文从分析2003年度莆田市荔城区医保基金的运行状况入手，剖析多种因素缺陷造成的负面效应。 |
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Abstract: State-of-art and new developments on industrial dust control technology in this country are introduced.
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文摘:介绍了我国工业防尘技术的现状和新进展。 |
