英语翻译the gears engaging with planet gears and rotating around

英语翻译Features different gears for idling and driving,working 英语翻译To start the engine or shift the gears,the drive has to 英语翻译Gears are direct contact bodies,operating in pairs,that 英语翻译Gear Materials (Reading Material)Gears are manufactured Their parents are working in the school there gears.(对in the 英语翻译Planetary gears are used mainly in final drives,rear-mou 英语翻译Gears are often through-hardened by water or oil quenchi 英语翻译The earth is a planet(星球),with water and trees,with flow the earth is a planet and it goes around the sun.seven other to play Gears of war,pleease什么意思 英语翻译Push a child in a swing,or ride a planet around the sun, 英语翻译The planet’s species and habitats,and the goods and serv