| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a block unit structure having a sophisticated constitution and produced at a low cost. <P>SOLUTION: This block unit structure is formed into a cube, five faces in its six faces have four bores 42 respectively, and the other face has two symmetrical bosses 41 and two symmetrical bores 43. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
