landing opening 中文意思是什麼
landing opening
解釋
電梯口-
Establishing an human spine dynamic model is an significan event to study spine injured biomechanics of pilot " s ejective injury, parachute opening, landing and study the endurance to impact loading on human spine. in this paper, the huston " s method of kane " s equations is developed so that it can be applied to the multibodysystem including translation between the bodyies. the dynamic model of human spine is provided basing on these theories, while the big movement of spine is considered. the deformation of vetebra is far smaller comparing with the intervetebra disc, so the spine is considered into multibodysystem including rigid bodies ( vetebra ) and the flexible bodies ( intervetebra disc ). the computer solution correspond with the results of the large scale human impact test. the rigid coefficient factors and the damping factor of intervetebra joints are obtained
人體脊柱動力學模型的建立對研究飛行員彈射救生、傘兵跳傘開傘、著陸等脊柱損傷的生物力學以及研究人體脊柱耐受沖擊載荷的極限問題都具有重要意義.首先發展了凱恩方程的休斯頓方法，使其可應用於變形體連接的多體系統，並以此理論為依據建立人體整椎脊柱沖擊動力學模型，此時考慮脊柱的大位移運動，每個椎骨的變形相對椎間盤的變形小得多，把脊柱看成由剛體（椎骨）和變形體（椎間盤）組成的多體系統.並以大型真人坐姿沖擊實驗結果進行了擬合，最後得到腰椎間關節剛度系數因子和阻尼系數因子 -
It was the sound of the gunfire of these paratroopers, the spearheads of the enormous landing forces that declared the opening of the second front
作為大規模登陸戰的前鋒，正是這些傘兵們的槍聲拉開了「第二戰場」的幃幕。 -
China ' s economic growth was comparatively rapid with past twenty years " opening and reform policy, however, china ' s economic growth rate dropped from 14. 2 percent in 1992 to 9. 6 percent in 1996, 8. 8 percent in 1997, 7. 8 percent in 1998, 7. 1 percent in 1999 after macroeconomic " soft - landing "
20多年的改革開放，我國經濟經歷了近20年的快速增長。進入90年代，我國開始實施緊縮計劃，實現了宏觀經濟的「軟著陸」 ，經濟增長率由1992年的14 . 2下降為1996年的9 . 6 。
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