1、创建Box:(长方体) 2、创建cone(锥体) 3、创建sphere(球体) 4、创建GeoSphere(几何球体) 5、创建Tube(管状体) 6、创建Torus(圆环) 7、创建Pyramid (四棱锥) 8、创建Teapot( 茶壶)

本标准适用于空调机换热器用的拉制圆形铜管

7.1. Overall Structural Behavior of VS 7.2. Shear Wall Subsystem 7.3. Shaft (Tube) Subsystem 7.4. Rigid Frame Subsystem

7.1. Overall Structural Behavior of VS 7.2. Shear Wall Subsystem 7.3. Shaft (Tube) Subsystem 7.4. Rigid Frame Subsystem

Introduction Genetic Defects Neural Tube Defect Mouth/facial defects Limb defects Congenital Heart Defects Summary

§3-1 扭转的概念和实例 (Concepts and example problem of torsion) §3-2 扭转内力的计算 (Calculating internal force of torsion) §3-3 薄壁圆筒的扭转 (Torsion in thin—wall circular tube) §3-4 圆轴扭转的应力分析及强度条件 (Analyzing stress of circular bars & strength condition) §3-8 开口和闭合薄壁截面杆的自由扭转 (Free torsion of open and closed thin￾walled members) §3-5 圆杆在扭转时的变形 ·刚度条件 (Torsional deformation of circular bars & stiffness condition) §3-6 密圈螺旋弹簧的应力和变形 (Calculation of the stress and deformation in close-coiled helical springs) §3-7 非圆截面杆的扭转 (Torsion of noncircular prismatic bars)

3-1扭转的概念和实例 (Concepts and example problem of torsion) 3-2扭转内力的计算 (Calculating internal force of torsion) §3-3薄壁圆筒的扭转 (Torsion in thin-wall circular tube) 3-4圆轴扭转的应力分析及强度条件 (Analyzing stress of circular bars& strength condition)

83.1 Light-Emitting Diodes Semiconductor Device Principles • Semiconductor Materials • Device Efficiency • Interfacing 83.2 Liquid-Crystal Displays Principle of Operation • Interfacing 83.3 The Cathode Ray Tube

Summer Conditions Heat flow Indoor air temperature Summer Conditions Heat flow Indoor air temperature Remove heat from indoor air Finned-Tube Heat Exchanger

草本,灌木或乔木,常有刺及明显的皮孔。 叶互生,稀对生,单叶或复叶,托叶常附生于叶柄上 而成对。 花两性,辐射对称,花托凸隆或凹陷, 花被与雄蕊常愈合成1碟状、钟状杯状、坛状或圆筒 状的花筒( floral tube或 hypanthium),此花筒常被 称为萼筒或花托筒,花萼、花冠和雄蕊看起来从花筒