carbon-black technics [化學(xué)]炭黑工藝carbon-black seeding [地球科學(xué)]碳黑種雲(yún)carbon-14 dating 放射性碳測(cè)定年齡carbon trading 碳貿(mào)易（一種環(huán)保措施，公司和政府買(mǎi)賣(mài)二氧化碳排放量許可証的貿(mào)易）。carbon tool steel strip [經(jīng)濟(jì)學(xué)]碳素工具鋼帶carbon tetrachloride methods [毉葯科學(xué)]四氯化碳法carbon tetrachloride [有化] 四氯化碳（等於tetrachloromethane）carbon tax n. 菸塵排放稅carbon suboxide [化學(xué)]二氧化三碳次氧化碳carbon strip heater [經(jīng)濟(jì)學(xué)]炭條加熱器carbon strip 碳條carbon steels carbon steel seamless drum forging [能源科學(xué)技術(shù)]碳鋼無(wú)縫鍋爐鍛件carbon steel round bar [經(jīng)濟(jì)學(xué)]圓形碳素鋼條carbon steel fibre [經(jīng)濟(jì)學(xué)]碳素鋼纖維carbon steel covered electrode 碳鋼銲條carbon steel [材] 碳鋼，[材] 碳素鋼carbon star [天文學(xué)]碳星carbon stable isotope [地球科學(xué)]有機(jī)碳穩(wěn)定同位素carbon source concentration [環(huán)境科學(xué)技術(shù)]碳源濃度