在所有简单无害的娱乐项目背后都隐藏着危险，特别是对儿童而言。Under all the innocent fun, there are hidden dangers, especially for children.我们用一张摆放得很巧妙的椅子将它隐藏了起来。We had kept its presence hidden with a strategically placed chair.任何隐藏的东西都是有害的（所以披露就等于安全）。...
翼缘和腹板都有令人满意的延伸率 ( 即28% ).Both flange and web exhibited satisfactory elongation characteristics ( i . e . 28 % ).研究了对该膜强度和延伸率的影响因素.The several main factors of influences on strength and elongation. was analysed.柔性好, 高延伸率,...
他研究了摆线 、 圆外旋轮线和四点圆的旋轮线的几何性质.He investigates geometrical properties of cycloids , epicycloids, and hypocycloids.由于这个缘故,摆线又叫做等时曲线.For this reason the cycloid is called the tautochrone.分析摆线钢球行星传动减速器的振动特性.The vibration perfo...
Essentially fractures can cut most types of carbonate fabric.实质上裂缝可割切大多数类型的碳酸盐组织.Fractures of the nose may be associated with septal tractures and hematomas.鼻骨骨折可伴有中隔骨折和血肿.Fractures often impose a greater need for strict...