permanent block的相关资料：
临近单词
permanent bar
permanent
permanent magnet dynamic loudspeaker
Permanent magnetism DC micro-motor
permanent magnet-synchronous motor
Permanent needle of deep venipucture
permanent-magnet brushless machine
permanent-magnet-field generator
Permanent magnetic drum dry separator
permanent-magent double rotor motor
Permanent-magnet brushless DC motor
Permanent address and telephone no.
