Contact us
Choose a category below so we can get back to you as quickly as possible.
水池直徑8米 週邊路寬1米X2=週邊路的直徑是10米 用路的面積-水池的面積X厚度0.2米=環路的混凝土用量(5.652米³;) 3.14X5²;-3.14X4²;=78.5-50.24=28.26X0.2=5.652米³;
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.