济南别墅装修
2 planetary gear train The basic set of motion Introduction Planetary gear train basically includes a sun gear, a ring gear, planet wheels and the planet bracket. A planetary gear mechanism generally has a compact structure, small size, light weight, transmission ratio range, high transmission efficiency and smooth running, low noise, etc., but there are also relatively complex structure, high precision parts manufacturing, internal gear machining more difficult, poor self-cooling conditions, the structure is not easy to have a smaller gear ratio, and the planetary gears at high speed centrifugal force will rapidly increase, not easy to choose the appropriate bearings and other shortcomings.
小楼新雨
扭转振动发生时，曲轴曲折，因为权力的中风是双管齐下。 It is caused by cylinders furthest away from the crankshaft output. As these cylinders apply thrust to the crankshaft, it twists and the thrust decreases.捻线和舒展曲轴产生振动。使用一种减振器在去年底曲轴对面的输出行为，以吸纳扭振。 Extreme pressure may be applied to high spots on the piston rings(活塞环)during the wear-in period .这可以导致活塞环过热，在上述各点，并造成损害，从而影响气缸壁，在形成粗条纹。 This condition is called scuffing.新的活塞环涂有多孔材料，如石墨，磷，或钼。这些材料会吸收油和服务，以最大限度地减少擦伤。 As the rings wear in, the coatings wear off. Some piston rings are chrome-plated. Chrome-plated rings provide better overall wearing qualities. They also are finished to a greater degree of accuracy, which lets the piston rings wear in faster.
Candice18611
1.在制作电子/电气产品声明的工作中，设备规格、生产能力、尺寸范围、吨位等是必不可少的。2.即使设备不是很关键，产品的包装部分等也必须保持。类型相似的设备通常可以用来制造、加工或组装这些产品。3.非关键设备----类型相似的设备可以用来制造、加工或组装这些产品。envelope在机械上，是个技术性的词汇，指机械或其它设备的性能范围，或者功用极限，特别是在短语push the envelope中；另外在机械上还有包络的意思，比如addendum envelope指齿顶包络面(螺旋齿轮的)。在第一句中，可以引申为“范围”（你也可以从信封的本意来想）。从以下附的解释中也可以看出这一点。在第二句中，语序应该是这样的 the part production envelopes etc must be maintained，however (the) equipment （is）less critical 这一句中，因为没有别的上下文可参考，从此意思上看我觉得envelopes应该是指包装。这个你可以参考你的原文出处。附上一些关于envelope的解释：n. 信封, 纸袋; 封[外]皮; 包封[皮, 装] 外[机]壳, 壳层; 包(围)层, 炉墙, 围砌; (电子射线管)泡 【数】包迹[线], 包络(线, 面), 方框(图) 【航空】气囊;【天】包层;【生】, 包被 floral envelope 【植】花被 例句 flight envelope 飞行包线 nuclear envelope 核膜 Self-addressed stamped envelope. 回邮信封贴足邮资写明发信人（自己）姓名地址的回信信封 damp-proofing for outer envelope 外围护结构防潮 An enveloping sheath or envelope. 外皮或包膜一个包装壳或外壳
吃货在学厨
机械engine; machine; machinery; mechanism【化】 machine; machinery【医】 mechano-【经】 machine
