【化】 低氢型焊条

low-rise

igh in both output and quality, but low in production cost

intermediate low density lipoprotein

low-noise and low vibration electric machine【电】

low-level center

adiabatic low-energy injection and capture experiment【核】

low-power Schottky diode【电子】

low-expansion foam fire extinguishing system in machinery space【安全】