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US5989384A Method of using a variable force compactor 失效
使用可变力压实机的方法

Method of using a variable force compactor
摘要:
A head is positionable close to a supported composite material. A compactor on the head is movable relative to the head by a fluid actuator. A programmable valve means ports air into the actuator at several different pressures to provide variable compaction force.
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