| 摘要 |
<p>A plough by means of which a cable may be buried below the sea-bed is characterised by means to vary the length of the path of a cable extending through the plough, which means is responsive to changes in tension in the cable. In one preferred form of the plough, the cable extends over two surfaces (6, 8; 6, 5, 13; 22, 23, 24, 25) and these surfaces are mounted so as to be relatively movable in response to changes in the cable tension.</p> |
