... differential manometer 差示测压计，测压差计 differential phase measuring set 微分相位测量器 differential preamplifier 差分式前置放大器 ...
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...fferential nuclear magnetic resonance magnetometer 差动式核磁共振磁强计 differential phase measuring set 微分相位丈量器 differential phase shifter 微分移相器 ..
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