| 摘要 |
PROBLEM TO BE SOLVED: To provide a sleeper used for a directly connected track capable of facilitating the change of sleepers because there is no need to lift up rails in the directly connected track. SOLUTION: The sleeper used for the directly connected track is so constituted that a block (2) formed only directly under the rail is connected with a joint material (3) capable of being divided or removed. COPYRIGHT: (C)2004,JPO&NCIPI
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