就国内现有的薄壁钢梁弯扭失稳理论进行了分析,从薄壁杆件的一般理论出发,推导出荷载过截面弯心并与主轴平行的受弯钢梁的临界弯矩公式。
On the base of the general theory of thin-walled members, we deduce a new critical moment formula of steel beam under transverse loads which pass the shear center and parallel to the main axis.
从而突破了弯心不共线薄壁杆件体系计算困难的问题,显示了这种计算方法的优越性。
Some difficulties in calculation of thin-walled structures with "plane bending theory" and "constrict twist theory" are overcome, showing the advantages of this method.
本文分析了试验过程中摆杆形变对柔性接头摆心、摆角数据的影响。
This paper analyzes the influence on the pivot point and deflection angle from the pendulum shaft's deformation in course of the test.
心驻芳华,是在心中树立一杆人格的标尺,标示人之为人的准则,指引人生的方向;
Heart in Fanghua is in their hearts to establish a personality ruler, marking criteria for a human person to guide the direction of life;
平衡杆每一次大幅度摆动,都紧紧地牵动着观众的心。
Every time a substantial balance shot swing, all tightly touches the hearts of the audience.
研究数据表明这些球手并没有在比赛中努力求胜,如果他们求胜心强、冒险出杆,应该会打出更多的双伯忌和老鹰球(高于标准杆两杆或者低于标准杆两杆)。 。
Thee stats suggest they did not try harder because a higher number of riskier shots would have shown up in more double bogey and eagles (two over or two under par. )
但当他们再学剑、刀、杆等器械时,则又会感觉到力不从心,为什么呢?
But when they learn sword, saber, cudgel such kind of instrument, they will feel the lack of the ability to reach what they wish. Why?
导向辊 的作用是对带液心的铸坯起支撑作用和导向作用,同时也是在开浇时对引锭杆进行支撑和导向。
The guidance roller supports the dummy bar when the casting process is just started. It also supports the soild state billet with liquid core and guides the billet direction in the casting process.
导向辊 的作用是对带液心的铸坯起支撑作用和导向作用,同时也是在开浇时对引锭杆进行支撑和导向。
The guidance roller supports the dummy bar when the casting process is just started. It also supports the soild state billet with liquid core and guides the billet direction in the casting process.
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