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Abstract: Some important achievements of SAW mechanical quantity sensors at home and overseas are reviewed briefly, the characteristics and basic working principle of SAW mechanical quantity sensors are expounded, in the meantime, the relationship between
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文摘:扼要回顾了国内外在声表面波力学量传感器方面一些重要的成就，阐述了声表面波力学量传感器的特点、基本工作原理，简单推导了该传感器输入-输出关系，并对声表面波其他传感器作了介绍。 |
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Abstract: Some important principles in the design of split box molding are discussed concerning the selection of mold joint，the methods of location and the design of gating system.It has been proved in production that the principles discussed had great ef
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文摘:以床身为例，讨论了劈箱造型工艺设计中的几个重要原则：包括分型面的选择、定位方法、分芯方法及浇注系统设计等；生产实践证明，这些原则对铸件生产成本和品质有重要的影响。 |
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Abstract: Some new technological measures,such as new reactors,gel method to remove silicon,direct dissolve acid to recrystallizate and direct calcine from zirconyl chloride,were used to reform zirconium dioxide production process.As a result,the material
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文摘:采用新型反应器及胶凝除硅、直接酸溶重结晶、直接煅烧等技术对二氧化锆的生产工艺进行了改革，降低了原材料消耗及能耗，减少了废液排放量，并将回收的废物加工成副产品白炭黑，在生产过程中防治污染。 |
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Abstract: Some optimum fitting methods for treating the measured lift data of the symmetrical cam profile are presented in the previous decades.
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文摘:已有的配气凸轮实测升程数据的优化拟合研究基本上都是针对对称型配气凸轮展开的。 |
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Abstract: Some problems of quantum mechanics can be solved easily by means of the invariant of differential equation.
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文摘:利用常微分方程的不变式，非常方便地求解了一些量子力学问题. |
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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。 |
