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转速测量
el.mach.	tachometric surveying; speed measurement
hydroel.st.	tachometry
space	rotating speed measurement
tech.	tachometric survey; tachometrical surveying
转速〔视距〕测量
geol.	tachometric survey (ing); tachometrical survey (ing)
转速测量法
auto.	tachometry

转速测量: 12 phrases in 6 subjects

Automobiles	1
General	3
Geophysics	1
Metallurgy	1
Space	2
Technology	4