Fengzhiyuan has engineering and technological research centers and bee feeding yards, etc.

蜂之源拥有蜂产品工程技术研究中心 、 种蜂场等.

互联网

Therefore, surface roughness measuring technique takes a very important place in engineering and technological research.

因此, 表面粗糙度测量技术在工程技术研究中占有非常重要的地位.

互联网