| 1. | The emphasis of this paper is research on the detection of laser - generated surface acoustic wave
本文着重在实验上研究激光产生声表面波的检测。 |
| 2. | Analyses on the length of contact lines and the contact area of a double enveloping wormgearing with planar generating surface
平面二次包络环面蜗杆传动接触状况分析 |
| 3. | The launch of the " computer - generated surface forecast weather charts " in june last year has been welcomed by the public
电脑模式预测地面天气图自去年六月推出以来，深受市民欢迎。 |
| 4. | The launch of the " computer - generated surface forecast weather charts " in june last year has been welcomed by the public
电脑模式预测(地面)天气图自去年六月推出以来，深受市民欢迎。 |
| 5. | Abstract : calculation of the length of contact lines of a double enveloping wormgearing with planar generating surface and finding out the size of contact area are th e foundation of strength analyses of wormgearing
文摘:计算平面二次包络环面蜗杆副的接触线长度和了解蜗轮齿面接触区域的大小是蜗杆传动强度分析的基础。 |
| 6. | Abstract : in order to solve the double parameters enveloped in the geartooth flank generating , the complicated double parameter envelope is simplified to the generating process between work - piece and imaginary crown generating gear by means of mathematical transformation . the equation of the imaginary crown generating surface and the partial derivatives are deduced , so the differential geometric parameters of the generating surface can be obtained . by analyzing the generating motion between the imaginary crown generating gear and the work - piece , all the first to third order geometric parameters of the generated tooth flank at any given point can be calculated
文摘:为了解决直接求解展成法加工中存在的复杂双参数包络问题时的困难，提出通过数学变换，将此包络问题转化为假想平面产形轮与工件之间的展成问题来进行研究.推导了假想产形面的方程和各阶偏导矢，于是可获得产形面的微分几何参数.通过分析假想平面产形轮与工件之间的展成运动，即可得到被展成齿面上任意指定点的全部一至三阶微分几何参数 |
| 7. | The progress of laser ultrasonics has been discussed especially for the laser - generated surface acoustic wave . the transform process of energy from light to ultrasonic has been analyzed . the generation mechanism of laser - generated surface acoustic wave has been discussed in detail excluding thermo - elastic mode and illumination mode
介绍了激光超声领域的研究进展，分析了光致超声过程中，能量从光能到声能的转换，归纳了用激光激发声表面波的机理，讨论了两种主要的模型：热弹模型和融蚀模型。 |
