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- By discussing the property of interfaces base on differential geometry, the method of using enveloping surface to model the interfaces of surfaces can be obtained, and an example is given. 在讨论曲面之间形成的过渡曲面的性质的基础上,提出在立体造型中利用包络实现过渡曲面的步骤和计算方法,并给出了实例。
- enveloping surface of the cylindrical face group 圆柱面族包络面
- Calculation and machining of secondary envelope surface of star wheel 星轮二次包络面的计算及加工
- Have you stuck down the back of the envelope? 信封背面开口处贴牢了吗？
- The surface of the sun is a glowing gas envelope. 太阳的表面是一层炽热的气体层。
- He steamed the stamp off the envelope. 他用蒸汽把信封上的邮票揭下来。
- He glued a stamp onto the envelope. 他把邮票贴在信封上。
- As he picked up the envelope, a key dropped out. 他拣起信封时，一把钥匙掉了出来。
- As she picked up the envelope, a key dropped out. 她拾起信封时，一把钥匙掉了出来。
- Put a stamp on the envelope, will you? 在信封上贴张邮票，好吗？
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- The envelope's seal was torn open. 信封封缄被撕开了。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- The (flap of the) envelope was unstuck. 信封(的封口)没粘住。
- The calm water surface is very much like a mirror. 那平静的水面十分象一面镜子。
- There are several enclosures in the envelope. 信封内装有几份附件。
