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back-angle counter：逆向散射粒子计数器

back-acting shovel 反铲挖土机 | back-angle counter 逆向散射粒子计数器 | back-arc basin 弧后盆地

back-angle counter：记录逆向散射粒子的计数管

back-angle ==> 反向角 | back-angle counter ==> 记录逆向散射粒子的计数管 | back-arc area ==> 弧后区

counter, back-angle：背向角计数器

大气压力计数器 counter, atmospheric-pressure | 背向角计数器 counter, back-angle | 背向式计数器 counter, back-to-back

back-lighted shot：逆光摄影

"透光雕绘","back-light scribing" | "逆光摄影","back-lighted shot" | "后向散射","back-scattering"

back-lighted plotting surface：反光绘图面

back-level release ==> 后层释放 | back-lighted plotting surface ==> 反光绘图面 | back-migration ==> 反向移动

back-raking：后清除(由动物直肠內挤压出的粪便)

back-flow 回流;逆流 | back-packing cure 肉的包裹腌制法 | back-raking 后清除(由动物直肠內挤压出的粪便)

back-scratcher：背挠

back-scatteringthicknessgage 反向散射厚度计 | back-scratcher 背挠 | back-seatedvalve 后座阀 强迫就位阀

back-set bed：逆流层

back-selling ==> 逆向销售 | back-set bed ==> 逆流层 | back-setting effect ==> 逆流效应

back-spiker：钉道工

back rule 背缘尺 | back-spiker 钉道工 | back veneer 背[板]单板

back bridge wall：挡烟桥,火桥

back bridge relay ==> 反桥接继电器=>被呼者継電器 | back bridge wall ==> 挡烟桥,火桥 | back bulb ==> 背生鳞茎,衰老球根

the bird of wonder：凤凰;长生鸟

the bird of peace鸽子 | the bird of prey 猛禽 | the bird of wonder凤凰;长生鸟

flange rail：平底轨条

"凸缘皮带轮","flange pulley" | "平底轨条","flange rail" | "凸缘肋","flange rib"