| 摘要 |
<p>The seepage block has a cuboid housing (2) consisting of a baseplate (3), two short side walls (e.g. 6), two long side walls (4, 5), a cover plate (8), support columns (10), at least two inspection apertures (15), an inspection channel (25) connecting them, and a guide gutter (18), open at the top, for the insertion of an inspection probe through the channel.</p> |
