查询词典 Mass

However, the ultimate mass of the star is determined both by the mass of the cloud out of which the star forms and by a number of feedback processes that occur during the evolution of the protostar.

然而，最终形成的恒星的质量是由恒星形成于其中的气体云的质量和星坯演化过程中的一系列反馈过程共同决定的。

The embryo inside the protostar is less mass ive than the envelope; most of the mass is still falling inward

原恒星内部的胚胎的质量比包壳小，大部分物质一直在朝中心落去。

Our objectives cannot be attained unless we use various organizational means to mobilize the masses and conduct propaganda among them in the manner described, that is to say, unless the presidiums and the economic and finance departments of the government bodies at all levels actively attend to discussing and checking up on the work of economic construction, unless they spur the mass organizations into action and hold mass propaganda meetings.

假如不这样地从组织上去动员群众和宣传群众，即是说，各级政府的主席团、国民经济部和财政部不着力抓着经济建设的工作去讨论、检查，不注意推动群众团体，不注意开群众大会做宣传，那末，要达到目的是不可能的。

A computer simulation shows the evolution of a molecular cloud with a solar mass of 10^4 falling toward a supermassive black hole with a solar mass of 10^6. Here, the cloud is within 0.5 parsecs of the black hole. Color scale is from 0.1 g cm^-2 to 1000 g cm^-2. A small population of stars is being ejected from the system in the this image.

据美国生活科学网站21日报道，银河系中央潜伏着一个巨大的黑洞，身处黑洞附近的天体都会逐渐地被黑洞吞噬，并最终消失地无影无踪，也就是说在理论上黑洞附近是不可能存在任何天体的。

Lead Ph Basic load rating Permissible load F P Nut mass Shaft mass Dynamic rating Ca Static rating C 0 a mm kN kN kN kg kg/m 16 81.1 231.3 14.61 20.85 Type using standard material Standard grease Standard seal Iron-based AFB-LF None Dimensions of the Ball Screw Nut Attached with Wiper Ring W and QZ Lubricator WW avail- ability QZ avail- ability Dimensions including WW L Length of protrusion with QZ attached QWL Outer diameer of protru- sion with...

载荷钢球圈列数 DN值预压预压方法预压负荷 2列 2.50圈 70000 有定位置预压 4370 导轨型号丝杠轴加工方式球保持器轴的花键部分中空轴滚珠精密无无无轴承支撑座固定侧的推荐方式轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球无无双螺帽右螺纹，左螺纹，左右螺纹无轴方向刚性。。。

Stroke Lead Ball center-to-center diameter Basic load rating Nut mass Shaft mass Dynamic rating Ca Static rating C 0 a mm mm mm kN kN kg kg/m 70 1 4.15 0.29 0.42 0.01 0.07 Type using standard material Standard grease Standard seal Iron-based AFB-LF None Dimensions of the Ball Screw Nut Attached with Wiper Ring W and QZ Lubricator WW avail- ability QZ avail- ability Dimensions including WW L Length of protrusion with QZ attached QWL Outer diameer...

载荷钢球圈列数 DN值预压预压方法导轨型号 3列 1.00圈 70000 有大球径滚珠丝杠轴加工方式球保持器轴的花键部分中空轴轴承支撑座固定侧的推荐方式精密无无无 EK4， FK4 轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球轴方向刚性无单一螺帽右螺纹无 35.0 螺纹条数防尘措施防尘罩形式 W清洁环与QZ润滑装置配用。。。

Lead Ph Basic load rating Permissible load F P Nut mass Shaft mass Dynamic rating Ca Static rating C 0 a mm kN kN kN kg kg/m 6 29 99 3.42 11.31 Type using standard material Standard grease Standard seal Iron-based AFB-LF None Dimensions of the Ball Screw Nut Attached with Wiper Ring W and QZ Lubricator WW avail- ability QZ avail- ability Dimensions including WW L Length of protrusion with QZ attached QWL Outer diameer of protru- sion with QZ atta...

载荷钢球圈列数 DN值预压预压方法预压负荷 1row 2.50圈 70000 有定位置预压 765 导轨型号丝杠轴加工方式球保持器轴的花键部分中空轴滚珠精密无无无轴承支撑座固定侧的推荐方式轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球 BK30，FK30 BF30， FF30 双螺帽右螺纹，左螺纹，左右螺纹无轴方向刚性。。。

Lead Ph Basic load rating Permissible load F P Nut mass Shaft mass Dynamic rating Ca Static rating C 0 a mm kN kN kN kg kg/m 5 23.7 84.7 1.69 9.06 Type using standard material Standard grease Standard seal Iron-based AFB-LF RR Dimensions of the Ball Screw Nut Attached with Wiper Ring W and QZ Lubricator WW avail- ability QZ avail- ability Dimensions including WW L Length of protrusion with QZ attached QWL Outer diameer of protru- sion with QZ att...

载荷钢球圈列数 DN值预压预压方法导轨型号 2列 1.50圈 70000 无无滚珠丝杠轴加工方式球保持器轴的花键部分中空轴轴承支撑座固定侧的推荐方式精密无无无 BK30，FK30 轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球轴方向刚性 BF30， FF30 单一螺帽右螺纹，左螺纹，左右螺纹无 400.0 螺纹条数。。。

Stroke Lead Ball center-to-center diameter Basic load rating Nut mass Shaft mass Dynamic rating Ca Static rating C 0 a mm mm mm kN kN kg kg/m 70 1 6.2 0.54 0.94 0.017 0.14 Type using standard material Standard grease Standard seal Iron-based AFB-LF None Dimensions of the Ball Screw Nut Attached with Wiper Ring W and QZ Lubricator WW avail- ability QZ avail- ability Dimensions including WW L Length of protrusion with QZ attached QWL Outer diameer...

载荷钢球圈列数 DN值预压预压方法导轨型号 3列 1.00圈 70000 无无滚珠丝杠轴加工方式球保持器轴的花键部分中空轴轴承支撑座固定侧的推荐方式精密无无无 EK5， FK5 轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球轴方向刚性无单一螺帽右螺纹无 60.0 螺纹条数防尘措施防尘罩形式 W清洁环与QZ润滑装置配用 1 无。。。

Stroke Lead Ball center-to-center diameter Basic load rating Nut mass Shaft mass Dynamic rating Ca Static rating C 0 a mm mm mm kN kN kg kg/m 1100 10 21 11.1 22 0.58 1.81 Type using standard material Standard grease Standard seal Iron-based AFB-LF None Dimensions of the Ball Screw Nut Attached with Wiper Ring W and QZ Lubricator WW avail- ability QZ avail- ability Dimensions including WW L Length of protrusion with QZ attached QWL Outer diameer o...

载荷钢球圈列数 DN值预压预压方法导轨型号 1row 2.50圈 70000 有大球径滚珠丝杠轴加工方式球保持器轴的花键部分中空轴轴承支撑座固定侧的推荐方式精密无无无 EK15， FK15 轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球轴方向刚性 EF15， FF15 单一螺帽右螺纹 1：1 110.0 螺纹条数防尘措施防尘罩形式 W清洁环与QZ润滑装。。。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐