The laser light is delivered along a fibreopticcable to a laser head with a focal length of 120 mm.
激光光传递沿光纤电缆连接到激光头的和120毫米焦距。
2
Instead of letting it pass, the holes would reflect the light back toward the tip of the fibreopticcable, effectively turning the diaphragm into a mirror even as it still allowed water to pass.
The next significant attack, it said, “may well come down a fibre-opticcable” and may be serious enough to merit a response under the mutual-defence provisions of Article 5.