- frictional metal prop
- 摩式金属支柱
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
frictional metal prop
Look at other dictionaries:
stringed instrument — a musical instrument having strings as the medium of sound production, played with the fingers or with a plectrum or a bow: The guitar, the harp, and the violin are stringed instruments. * * * Any musical instrument that produces sound by the… … Universalium
CF-105 Arrow — Infobox Aircraft name= CF 105 Arrow type= Interceptor manufacturer= Avro Aircraft Limited (Canada) caption= Photo from the Canadian Department of National Defence designer= first flight= 25 March 1958 introduction= retired= status= Cancelled 20… … Wikipedia
