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Abstract: A buoyancy method of measure diamond fi lms density was reported.Feature of the method is quick,convenient accuracy and practical.
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文摘:本文报道了一种测量金刚石膜密度的浮力法。这种方法的特点是快速、方便、准确和实用。 |
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Abstract: A called bidirectional measurement method is introduced into measuring the rotation accuracy of super-precision air spindles in this paper.
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文摘:介绍一种测量超精密花岗石空气主轴径向回转精度的测量方法――双向转位法。 |
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Abstract: A cavity is made on both sides of weld bead.
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文摘:在焊道表面两侧作一空腔。 |
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Abstract: A characteristic of piezoresistive pressure sensor and some parameters used to compute altitude and velocity in unmanned air vehicle(UAV) are introduced.The sensor's temperature characteristic is further improved after temperature compensation,i
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文摘:主要介绍了压阻式压力传感器的特点及在无人机上用其来解算高度、速度等参数的使用情况，经过温度补偿后，使传感器的温度特性得到了进一步的改善，用单片机解算高度、速度，达到了满意的效果，同时分析了压阻式传感器的应用前景。 |
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Abstract: A class of general nonlinear neutral differential equations for its special cases are discussed.Sufficient conditions for all solutions of the equations to be oscillatory are obtained.It can be treated in the extreme limite theorem.
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文摘:在特定条件下讨论了一阶非线性中立型的微分方程振动问题,产生了一阶非线性中立型微分方程的振动准则,并用极限理论证明了该振动准则的正确性. |
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Abstract: A comprehensive critique on 10 years' architectural exploration of Yungho Chang, this essay is composed of Eight Steps of both diachronic and synchronic narrative and analysis.
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摘要：本文是对张永和十年来建筑探索的综合性评论，它由八步同为历时性和共时性的叙述、分析组成。 |
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Abstract: A continuity wave model is put forward for the dispersion processof liquid-liquid two-phase system,by coupling mass and momentum conservation equations of two-fluid model.The conditions that result in a dispersion choke and the weak instability
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文摘:以双流体模型为基础，通过质量守恒方程和动量守恒方程的耦合，提出了液-液两相系中弥散传质的连续波模型.由该模型得到弥散传质过程阻塞和弥散传质过程弱不稳定性产生的条件，计算了液滴尺寸及其分布对乳化液极大堆砌分数的影响，解释了剧变型乳化逆变和渐变型乳化逆变现象.研究结果表明，乳化逆变是由于弥散传质过程的不稳定性而引起的悬浮体型态的改变，随液滴尺寸多分散性的增大，极大堆砌分数增大；随液滴平均尺寸的增大，多分散性对极大堆砌分数的影响减弱；当韦伯数足够大时，液滴尺寸及其分布对乳化液极大堆砌分数无影响. |
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Abstract: A continuous fabric of Carpet-Housing covers the whole site, connecting the upper and lower two communities, which were separated by a retaining wall.
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摘要：地毯式集合住宅作为一种连续的肌理，覆盖整个基地，连结被挡土墙分隔的高低两个社区。 |
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Abstract: A crack appeared in the junction between the base of the aisle ladder and the ground of the power plant and made cool leakage on airseparating aguipment.
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文摘:杭钢动力厂走梯旁基础与地坪连接处出现一条裂缝，致使空分设备出现漏冷。 |
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Abstract: A detailed analysis is made of the errors made by the system trace, of the mutual relation between trace error and contour error and of the effect on accuracy produced by contour machining, and some computation formulas have been worked out.
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文摘:从进给伺服系统动态响应、滞后特性角度，较详细地分析了跟随误差产生的原因，跟随误差与轮廊误差之间的相互关系和对轮廊加工产生的精度影响，并给出了具体的计算公式。 |
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Abstract: A digital automatic ultrasonic testing system developed for stovetubes of petrochemistry was introduced including the choice of the angle of a transducer and the grading of tubes.
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文摘:介绍自行研制的透射式数字化炉管超声自动检测系统及检测结果，并对超声探头的入射角选取和炉管的分级进行了探讨。 |
