[riˈtræktə]
①牵开器：牵开切口边缘以及将下方器官和组织拉向后方，以便保持手术暴露区的器械；有许多种形状、大小和类型；②缩肌
习惯用语Emmet's retractor
Emmet牵开器：自留式阴道扩张器Moorehead's retractor
Moorehead牵开器：将唇、颊或手术切缘牵向后方的牵开器，它完全与头冠相适并装有金属纽，使形状、大小各异的头甲均可与之相接- binoculus
- binomial
- binophthalmoscope
- binoscope
- binotic
- binovular
- Binswanger's dementia(encephalitis)
- binuclear
- binucleate
- binucleation
- binucleolate
- Binz's test
- bio-
- bioacoustics
- bioactive
- bioaeration
- bioamine
- bioaminergic
- bioassay
- bioastronautics
- bioavailability
- bioblast
- biocatalyst
- biocenosis
- biocenotic