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Cyclodrive ; envelopment ; gears ; engage ; development ; cycloidal curve ; equidistant curves ; conjugate curves ; pitch point ; short arm coefficient ; planetary gear mechanism

摆线针齿传动;包络;齿轮;啮合;研制;摆线;等距曲线;共轭曲线;节点;短幅系数;行星机构

Moreover, they are not suitable for gears manufactured by different cutting tools. Based on gear generation principle, a new method to establish accurate 3D solid model of cylindrical gear by mechanism function of Pro/E is proposed. Taking the manufacture of spur-gear with pre-grinding hob as an example, this method is introduced in details and the accurate 3D solid model is set up.

以范成法加工齿轮的原理为理论基础,介绍在Pro/E平台下利用其机构模块的"轨迹曲线"功能精确构建各种刀具加工出来的渐开线圆柱齿轮齿廓曲线的方法,并以磨前滚刀加工直齿圆柱齿轮为例,详细介绍该方法的使用步骤,构建其精确的三维实体模型。

Can be seen, no overload is the essence of the centrifugal pump, pump shaft power curve peak, or shaft power with the increase of flow rate changes are small, relatively flat power curve that axis, so that the pump shaft power in the dead lift off to zero head (that is, from zero flow to maximum flow rate) are less than equal to the original context of the supporting motive power.

可见,无过载离心泵的实质是指,泵的轴功率曲线有峰值或轴功率随流量的增加而有较小的变化,即轴功率曲线比较平坦,使泵的轴功率在关死扬程到零扬程范围内都小于等于原动机的配套功率。

Some conclusions were summarized as following: wood、 paper、 fabric and kitchen rubbish have the resemble pyrolysis characteristics; it is obvious that plastic"s decalescence happened during it"s pyrolysis process; the range of τ_max from great to small in sequence is plastic、 rubber、 fabric、 paper、 kitchen rubbish and wood.

其次,本文对垃圾典型组分的快速热解特性作了研究,并同程序升温时的热解特性作了比较,得到以下一些结论:木屑,纸屑,织物和厨余,其热解特性具有相似之处,微分转化率曲线均表现为单峰曲线;塑料在反应时存在较明显的吸热现象;τ_max(最大失重率所对应的时间)由大到小依次是塑料,橡胶,织物,纸屑,厨余,木屑。

The first is the prediction of there exists a reverse "S"-feature curve in the decay portion of the light curves of GRBs.

第一个工作是γ暴光变曲线脉冲的衰减段存在反"S"曲线预言。我们首先详细列出了Qin模型的推导过程。

A new method to measure fluorescence lifetime, which compose Lssajous figure to a straight line with fluorescence decay curve and RC curve line is described in this paper.

本文介绍了一种测量荧光寿命的新方法:利用荧光衰减曲线和RC电路衰减曲线合成李萨如图形来测量固体荧光材料的荧光寿命。

The optical property of CdS nanocrystals in ZrO 2 thin film has been studied. The film was fabricated by sol gel technique. Photoluminescence and photoluminescence excitation spectra of the samples with different annealing temperature were measured. Photoluminescence decay curve of CdS nanocrystals at different annealing temperatures was studied.

研究了用溶胶凝胶方法制备的CdS超微粒/ZrO2薄膜的发光特性,测量了不同退火温度处理的样品的荧光光谱、荧光激发光谱和荧光衰减曲线的变化,通过荧光衰减曲线研究了140 ps左右的CdS的带间跃迁发射和较慢的表面态发射。

The detail of the measured decay curve depends on the thickness of the absorber and the energy shifts between the source and filter.

Harris〔,,分别用经典力学和量子力学的方法推导出理论曲线,经过厚度修正,使理论和实验曲线符合较好。

Based on the practical process, this paper presented a method to compute the deceleration distance in real time.

基于插补的实际情况,给出一种实时计算减速距离的方法,在此基础上,实现了基于梯形速度曲线的速度平滑处理以及基于S形速度曲线的加速度平滑处理。

Because there is a declension when we count the burning rate of propellant with geometry comburent law, so the notion of relative pressure impulse is introduced which correspondent statistical average thickness in the law of gasses generation, ultimately acquire theΨ-Z curve by p-t curve which is measured by closed bomb.

几何燃烧规律在计算发射药的燃速时存在偏差,因此引入与统计平均厚度概念相对应的相对压力冲量来代替相对厚度,根据密闭爆发器实测的p-t曲线直接计算得到Ψ-Z曲线,建立了发射药实际燃烧速率模型,并编程进行了模拟计算。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。