词汇	大幽
释义	大幽 dà yōu传说中的古国名。幽冥。指地下﹐阴间。
随便看	precision measurement profile precision measurement standards precision measure separate precision measuring condenser microphone Precision Measuring Equipment precision measuring instrument precision measuring microscope precision measuring stage Precision Measuring Subsystem precision measuring technology precision measuring tool precision mechanism precision medicine precision metal precision metal film resistor precision meter precision metering precision metering dibbler precision metering mechanization precision meter lathe precision meters and instruments precision metrological instrument precision metrology precision micro-hole precision micrometer eyepiece