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Subject
- Beckman Instruments, Inc.350
- Potentiometer137
- Scientific apparatus and instruments88
- Microelectronics64
- Voltage regulators36
- Hydrogen-ion concentration--Measurement--Instruments20
- Beckman, Arnold O.14
- Oxygen--Measurement14
- Passive components14
- Electric switchgear13
- Ladder networks12
- Ceramic metals11
- Oxygen--Analysis11
- Analog-to-digital converters10
- Spectrophotometer9
- Education8
- Infrared spectroscopy8
- Hydrogen-ion concentration7
- Electric resistors6
- Servomechanisms6