宽元(1243年二月二十六日至1247年二月二十八日)是日本的年号之一。这个时代的天皇是后嵯峨天皇与后深草天皇、镰仓幕府征夷大将军为藤原赖经与藤原赖嗣、执权为北条经时与北条时赖。
这辆“宝马”车长五米,宽2.15米,高1.6米,足足6.5吨重,由红砖、水泥、钢铁做成,60万元的造价,堪比宝马。
The brick car is 5 meters long, 2.15 meters wide, 1.6 meters high and weighs 6.5 tons. The car, made of red bricks, cement and steel, cost 600,000 yuan, which is the same price as a BMW.
通过适当的幅度加权、降低激励信号的频率、调整阵元的间距等措施可以改变辐射声束的方向和辐射主瓣的角宽。
The direction of acoustic beam and angular width of main lobe can be changed by properly amplitude-weighting, decreasing the frequency of impulsive signal and adjusting the interval of array elements.
为了分析定宽过程中板坯头部失宽的变化规律,利用数值模拟的方法建立了板坯侧压的有限元模型。
In order to analyze the rules of head width reduction of slab during side pressing, a finite element model was established by method of numerical simulation.
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