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声呐
释义
声呐
Encyclopedia
工学
【应用声学及器件】
释
sonar
声呐
利用声波作为信息载体对水中目标进行探测、定位、识别、跟踪和实现水下导航、测量和通信的设备。
理学
声纳
释
sonar
声呐
“sound navigation and ranging”的首位字母缩写,后来被人们广泛采用。原意是声波导航和测距,现在一般统称为水声设备,就是利用声波作为信息载体对水中目标进行探测、定位、识别、跟踪和实现水下导航、测量和通信的各种设备。此外声呐还用于探鱼、地质勘探和地貌测绘等。
Physics
光学、声学
声学
sonar
声呐
>声学>水声学>释义
sonar
声呐
sonar
sound navigation and ranging
声呐
†
,水声测位仪
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seeds
seeds (bīja) and present or manifest activities
Seed Science and Technology Committee in Chinese Grassland Association
seeds coating of herbage species
seed selection
seed senescence
seed separator
seed-setting rate
seed shattering
seeds hypothesis
seed soaking
seed soaking equipment
seeds of agricultural capitalist in Ming and Qing Dynasties
seed solarization
seed sower
seeds stir-fried before use
seeds storage of herbage species
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