Drag onto the page to add a stretchable road segment.
拖到繪圖頁后,可以添加可延長路段.
互聯(lián)網(wǎng)
A kind of spring energy accumulation typed stretchable mechanism used in aerobat was designed.
摘要設(shè)計(jì)了一種飛器用彈簧儲能式空間可伸展機(jī)構(gòu).
互聯(lián)網(wǎng)
A kind of energy accumulation typed stretchable mechanism used in aerobat was designed.
設(shè)計(jì)了一種飛行器用彈簧儲能式空間可伸展機(jī)構(gòu).
互聯(lián)網(wǎng)