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牵引系数
eng.geol.	tractive coefficient
geophys.	drag coefficient
met.	traction coefficient
tech.	coefficient of traction
牵引阻力系数
plast.	drag coefficient
牵引附着系数
auto.	traction coefficient
牵引〔阻力〕系数
therm.eng.	drag coefficient

牵引 系数: 8 phrases in 5 subjects

Air defense	1
Automobiles	4
Communications	1
Space	1
Technology	1