双拓补式准直器  dual copy-supplement collimator

平行孔准直器  parallel-hole collimator

针孔准直器  pinhole collimator

加速器准直器  collimator

保偏双光纤准直器  Polarization maintaining dual fiber collimator; polarization-maintaining dual fiber collimator

串联式双孔板  double orifice in series

开口双直孔力敏元件  double straight open bore force-sensible element

立式双孔拉床  broaching machine

双层多叶准直器  dual MLC

双定位器准直线  locator-dual collimating line

双光纤准直器  Dual fiber collimator

双孔器  diplopore

双孔式箱形暗渠  twin box culvert

双孔双胞孢属  Dyadosporonites

应变式双孔平行梁式传感器  sulphuric acid palnt

裹胶变筛孔筛面  Rubber-coated with hole-varied screen mesh

筛孔孔径  screen-aperture

筛孔筛  mesh screen; mesh sieve

筛孔直径  sieve pore diameter; diameter; Sieve