The mechanical environment is described in the paper and then the environments in three different orbits are proposed , called leo ( low earth orbits ) , meo ( medium earth orbit ) and geo ( geosynchronous earth orbits ) . the influence produced by the atomic oxygen , micrometeorites and debris , ionizing radiation and cold welding under vacuum is presented in the paper . some principles are proposed , which can be as the method to choose materials of the mechanism in space environment 空間環(huán)境中力學(xué)環(huán)境對(duì)可動(dòng)結(jié)構(gòu)的影響直接關(guān)系到機(jī)構(gòu)的設(shè)計(jì)問(wèn)題,所以本文第四章中岳建如:中文摘要浙江大學(xué)博士學(xué)位論文20024首先詳細(xì)論述了空間環(huán)境中的力學(xué)環(huán)境,然后給出了空間環(huán)境的三種軌道環(huán)境劃分,及每一種環(huán)境影響因素對(duì)空間可動(dòng)結(jié)構(gòu)設(shè)計(jì)的影響,包括原子氧、離子射線、溫度、微隕石和碎片以及真空冷焊現(xiàn)象等環(huán)境因素,提出了材料選擇的原則,為可動(dòng)結(jié)構(gòu)材料選擇提供了一定的依據(jù)。