描述
控制规模还与PLC指令系统有关。规模大的PLC指令条数多，指令的功能也强，才能应付对点数多的系统进行控制的需要。控制规模是对PLC其它性能指标起着制约作用的指标；也是PLC划分为微、小、中、大和特大型
Taylor-Wharton 34HCB 34L High-Capacity Nitrogen Dewar
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Lab Glass Vacuum Chamber 4″ OD 2.75″ ID Tee Huntington
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MDC 2.75″ OD Del-Seal CF 1.25″ ID Flexible Bellows
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Sturtevant Richmont Exacta Digital 1/2″ Torque Wrench
