planar technique

例句：

1. 1.The engineer used a planar surface to make the machine work smoothly.
   工程师使用一个平面表面使机器工作顺畅。
2. 2. The architect designed a planar shape for the building's facade.
   建筑师为建筑的立面设计了一个平面形状。
3. 3. The physicist studied the properties of materials using a planar technique.
   物理学家使用平面技术研究材料的性质。