concave surface
短語詞組
- concave spherical surface 凹球面
- concave ellipsoidal surface 凹橢球面
- concave rotative surface 凹回轉(zhuǎn)面
- concave cambered surface 移動(dòng)擺桿
- annular concave spherical surface 凹球面環(huán)狀
- concave aspheric surface 凹非球面
- concave curve surface 凹曲面
- Hoop concave spherical surface 仿形加工滾輪凹球面
- concave -surface 水面下凹 返回 concave surface