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 þƽǽƽʯƽ֮һƽߣв׿ױΡȶԺõŵ㡣þƽ߲þϽ죬þϽߵһ²ϡҵĿУƼƽߣкܴŵ㡣

   һֲIJʵ30kg/mm238kg/mm2˲ʵﵽ110kg/mm2ָԶԶʣþƽʹʱעþƽױܡҡƽžɣƽӰֱ߶ȡƽжȡ⡣ʹڼ䲻ͿͣڲʹôʱͿϱһһ㹤ҵͣҪӳþƽߵʹֻҪȷķʹúʹţͿʹƽ߹ľȿԱʹϡƽ߾ȽʱͨԻйջָԣӳƽߵ֤ʹʱҪע⣺ʹڼ䲻ͿͣڲʹôʱͿϱһһ㹤ҵͼɡ .ʹƽߵĹҪעⲻҪڳʪиʴߺ͹͵¶Ȼʹúʹš

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