VENTILATING CHEMISTRY LABORATORY COMPLETE EQUIPMENT PROGRAMMABLE CONTROLLER TRAINING UNIT INTEGRATED HOUSEHOLD ELECTRIC APPLIANCE LABORATORY EQUIPMENT TRANSPARENT MOTOR MODEL AUTOMOBILE TEACHING DEMONSTRATION BOARD MODEL MICROCOMPUTER SOUND-CONTROL DEMONSTRATION DISPLAY CABINET TRANSPARENT HYDRAULIC DEMONSTRATION EXPERIMENT EQUIPMENT MECHANICAL PART MODEL MULTIMEDIA LANGUAGE LEARNING SYSTEM OBJECT LABORATORY COMPLETE EQUIPMENT COMPLETE EQUIPMENT FOR BIOLOGICAL LABORATORY FREQUENCY-CONVERSION SPEED-ADJUSTMENT EXPERIMENTAL UNIT PROGRAMMABLE CONTROLLER EXPERIMENTAL UNIT DOUBLE-CONTROL TRANSPARENT TEACHING ELEVATOR ELECTRICIAN TRAINING AND CHECKING UNIT MACHINE TOOL ELECTRIC TRAINING AND CHECKING AND ASSAYING UNI PRIMARY ELECTRICIAN TRAINING AND CHECKING UNIT HISTORY-GEOGRAPHY LABORATORY EQUIPMENT INTEGRATED INDUSTRY AUTOMATION CONTROL EXPERIMENTAL UNIT NATURE LABORATORY COMPLETE EQUIPMENT CHEMISTRY LABORATORY COMPLETE EQUIPMENT MULTIMEDIA INTEGRATED ELECTRIC CLASSROOM EQUIPMENT FINANCE AND ACCOUNTING ANALOG LABORATORY EQUIPMENT ANALOGOUS CIRCUIT EXPERIMENT BOX DIGITAL CIRCUIT EXPERIMENTAL BOX AIR-CONDITIONING LABORATORY EQUIPMENT