| 摘要 |
<p>The underpart (2) has openings (5,6) integrated into the end (4) of its forward region (3) for glass fibre entry and exit, and splice or coupler holders (51,52) in its centre with their undersides parallel to guidance grooves (54,24) and with semicircular troughs along their topsides and on the floor which together constitute closed ducts. Each holder has two hooks (55) on its sidewalls for engagement in openings in the floor. Two splice holders (51) can be substd. to form a pure splice cassette, or planar couplers can be accommodated without any holder (52). <IMAGE></p> |
