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第一宇宙速度 first cosmic velocity (物体具有每秒7.9公里的速度时, 就和地心引力平衡, 又叫环绕速度);
释义
见:
第一: 第一宇宙速度 first cosmic velocity (物体具有每秒7.9公里的速度时, 就和地心引力平衡, 又叫环绕速度);
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layout diagram
lay-out drawing
layout for drilling
layout machine
layout of advertisement
layout of details
layout of equipment
layout of parts
layout of structure
layout of tunnel
layout of underground railway
layout pass
layout plans
layout plot
layout position
layout shot
layout work
layover
lay panel
lay pipe(s)
lay [place, put] stress on
lay plate
lay [put, set] the saddle on [upon]the right [wrong] horse
lay reader
lay sb. on the gridiron
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