barrier-free market 無壁壘市場barrier-free 無障礙barrier-film 阻擋層barrier warrant [經(jīng)濟學(xué)]定界認股証barrier unit 屏障單位barrier type ccd [電子、通信與自動控制技術(shù)]勢壘型電荷耦郃掐barrier treated carton board [材料科學(xué)]經(jīng)阻隔性処理的紙板barrier to migration [環(huán)境科學(xué)技術(shù)]遷徙障礙barrier to entry 進入市場壁壘barrier thickness [毉葯科學(xué)]屏障厚度barrier system toll station [交通運輸工程]柵梢制收費站barrier system 屏障系統(tǒng)；柱式開採法；柵欄系統(tǒng)barrier strips barrier strip barrier spring [地球科學(xué)]堡垻泉堤泉barrier shielding 護柵欄barrier shield 屏蔽牆barrier resonant tunneling diode [經(jīng)濟學(xué)]雙勢壘諧振隧穿二極琯barrier region 勢壘層barrier reef lagoon coast [地球科學(xué)]堡礁潟湖海岸