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ķϩͲPTFEһĹϣͻѧʴԡ͸ߵԡԵԡ治ճԵȣΪС֮ơ 
ǰڸ߷Ӻϳ򣬶Ը±ϩľۺѽһЩоûмķϩܾۺϳɸ߾1935ǰձܵĹ۵ǣڼӾ練ӦУӱ뺬δȡǼ׻19361940䣬Ӣ¹רн˺һ±ԭȡϩ壨ϩϩľۺϡЩרָ±ԭӵķϩľۺѵģʱڵĴΪϩе4ȫ±ȡͲܽоۺϡ׻صżȻ֣ƾ󿴷ռݾۺоôPTFEķ»óꡣ 
׻أRTPlunkettŰ˾ܿɭʵҵĻѧҡ1938죬׻оƱڼ䣬ΪҪһʵ⣬ķϩԴȤʱķϩֻʵƱȴҪ100֮ࡣʵƱ֮˲ԣķϩڸƿУƿڸɱ׻صһоķϩѧʵķӦԺϳµĻ
һ죬ֵ£׻شСƿУװԼ2ķϩķϩƿӷ̨ϡƿķϩͨӦѧӦʵ鿪ʼֿķϩֹͣˣ׻ע⡣׻ؼ˸ƿƿﻹкܶණΪķϩǰѷȫ򿪣һ˿ͨͨſڣûйҡθƿһЩ춯ѷŲ£ӸƿﵹһЩɫĩţһѸ־Ѹƿ⿪õ൱İ׷ĩ׻ˣķϩۺˣɫĩǾۺְܿ׷ĩ˼ȷ췽
1941꣬׻ͨר״ΰPTFEķϩ֮  
