B 開頭單詞

back seat (n.)

back seat 后座

back seam line [紡織科學(xué)技術(shù)]背縫線

back seal test [機(jī)械工程]上密封試驗(yàn)上彌縫實(shí)驗(yàn)

back seal 倒密封 回密封 背密封

back scratcher 搔背器 后屈小腿挺身跳

back scheduling [勞經(jīng)] 反向安排日程；反向調(diào)度

back scattering 反向散射 后向散射

back scattered photon [醫(yī)藥科學(xué)]反向散射光子

back scatter densimeter [土木建筑工程]同位素反射密度儀

back scatter

back scanner [交通運(yùn)輸工程]后方障礙警報(bào)器

back saw with plastic handle [經(jīng)濟(jì)學(xué)]塑柄手鋸

back saw 背鋸；背鑲金屬的鋸弓鋸；（鑲邊）手鋸

back sand 背砂

back salary 欠薪

back run 封底焊；逆行；回流

back row seat cushion [交通運(yùn)輸工程]后座座墊

back row pins [體育]后排球瓶后排柱群

back rooms