circular duct
英
美
- 圆截面导管
circular duct的相关资料：
临近单词
circular fan
circular
circular hank washing machine
circular-harmonic expansion
circular dissipation per unit
circular nut with lock groove
circular dielectric waveguide
circular paraboloid reflector
circular polarization jamming
circular disk pole constraint
circular agricultural economy
Circular of the State Council
