| 摘要 |
<p>These metal building moulds are made of frames (1) and angles (2) which connect the frames together. The angles connect the frames pair by pair with the help of pins 22 and 23 at the four corners of the metal mould and throughout the length of the frame, as with all of the woodblock construction. The advantages of the invention are that we achieve easier, more economical connection with the rest of the construction and most importantly, have stability and security.</p> |
