传动器

It deals with the invention and development of time-keeping apparatus in our country during a historical period of some three thousand years, tracing this development from remote antiquity with its sundial and clepsydra making use of the shadow of the sun down to the Dynasties of Han, Sui, Tang and Sung with their water-powered astronomical clockworks insta...

内容论述我国古代三千年左右有关计时器的发明和发展，自远古利用日影的圭表和日晷起，中间经汉、隋、唐、宋等朝代，附装在水力天文仪器上的水力天文钟，都采用了齿轮和凸轮的传动，即已都属于机械性。

It deals with the invention and development of time-keeping apparatus in our country during a historical period of some three thousand years, tracing this development from remote antiquity with its sundial and clepsydra making use of the shadow of the sun down to the Dynasties of Han, Sui, Tang and Sung with their water-powered astronomical clockworks...

自远古利用日影的圭表和日晷起，中间经汉、隋、唐、宋等朝代，附装在水力天文仪器上的水力天文钟，都采用了齿轮和凸轮的传动，即已都属于机械性。元代郭守敬以后，到明初的詹希元，更发展到独立时钟机构，並有了指针和表盘。可是近四百年，即自明代万历年间，西洋的自鸣钟传来我国，我国在计时器方面的工作，始终在模制阶段，自己的发明遂归于停顿。那次会议闭幕以后，会中曾用英文出版一次，我国1956年12月，《天文学报》4卷2期用中文出版一次。现在根据一些新资料，重新加以增删和改正。

Pump is driven by a vertical motor through clamp coupling. Viewing from motor, pump makes clockwise rotation

泵的传动是通过夹壳联轴器由立式电动机驱动，从电机端看，泵为顺时针方向旋转

Output of 12 million and automobile semi-axle output of 650 thousand, which separately accounted for 14% and 27% of national output, among which, the output of coach gear box has accounted for 80% of national output.

綦江县境内拥有以綦江齿轮厂为主体，綦江齿轮传动公司为核心，綦齿汽车零部件公司等企业在内的綦齿集团以及长风齿轮等6家骨干和150余个齿轮机械制造加工企业。2006年完成汽车齿轮（变速器齿轮、驱动桥齿轮、轮边减速器系统齿轮、同步器等）产量1200万件，汽车半轴65万件，分别占全国产量的14%和27%，客车变速箱已经占全国的80%。

The safety of the safe coupling with elastic dowel pin and selection of its parameters are described in detail in combination with the project example, it is pointed out that good result can be obta in ed if it is applied in driving equipment of low speed and high torque.

文摘：结合工程实例对弹性柱销安全联轴器的安全性及参数的选取作了详细的阐述，指出其在低转速、高转矩的传动设备中使用，可取得很好的效果。

The safety of the safe coupling with elastic dowel pin and selection of its parameters are described in detail in combination with the project example , it is pointed out that good result can be obta in ed if it is applied in driving equipment of lowspeed and hightorque .

文摘：结合工程实例对弹性柱销安全联轴器的安全性及参数的选取作了详细的阐述，指出其在低转速，高转矩的传动设备中使用，可取得很好的效果。

Crown gear coupling is an important elementary assembly in mechanical transmission, used in mechanical equipment widely.

鼓形齿联轴器是机械传动的重要基础部件，在机械设备中广泛应用。

The transmission properties of crown gear coupling are analyzed comprehensively. The crowning curve and the gear parameters are optimized.

本文较全面地分析了鼓形齿联轴器的传动特性，提出了鼓形齿轮鼓度曲线及齿轮参数优化设计新方案。

From the experiment on multitooth mesh, several valuable results are obtained. It is verified that the crown gear coupling with optimum crowning curve has advantage in transmission properties.

进行了鼓形齿联轴器多齿啮合实验，得出若干有价值的实验结论，并通过实验，验证了优化鼓度曲线的鼓形齿联轴器具有优越的传动特性。

Adjustable frequency driver is one of the most useful devices of industrial drive engineering.

变频器是工业调速传动领域中应用很广泛的设备之一。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。