常見例句雙語例句Reserves of coal, coal bed methane gas, bauxite, refractory clay, potassic rock and so on rank first in China.煤、煤層氣、鋁土鑛、耐火粘土、鉄礬土、含鉀巖石等儲(chǔ)量居全國首位；http://www.chazidian.comPhosphoric acid technical grade can be used to produce variety of phosphate, refractory clay and rust –proof coating;工業(yè)級(jí)磷酸用作生産各種磷酸鹽， 磷酸耐火泥， 塗料工業(yè)用作 金屬防鏽漆；China has begun to restrict the mining and production of refractory clay and fluorite over concerns about reserves decreasing and environmental pollution, the central government's website said Sunday.據(jù)中國政府網(wǎng)3日消息，由於資源儲(chǔ)量快速下降和環(huán)境汙染嚴(yán)重等原因，國家要求開始對(duì)耐火粘土和螢石的開採和生産進(jìn)行控制。www.chinadaily.com.cn 返回 refractory clay