炭化鎢 的英文怎麼說
中文拼音 [tànhuàwū]
炭化鎢
英文
tungsten carbide tool-
Using the phosphotungstic acid immobilized on active carbon as catalyst, the iso - amyl gallate was synthesized directly by esterifying isoamyl alcohol and gallic acid
摘要以活性炭固載磷鎢酸作為催化劑，用沒食子酸與異戊醇直接酯化合成了沒食子酸異戊酯。Etc. heaters mosi2, sic for annealing furnace and single crystal furnace, high purity oxides high purity rear earth oxides, sio2, al2o3, tio2, ti2o3 and ti3o5 etc. for crystal growth and optical coatings. w, mo crucibles and w, mo products for crystal growth, fire - resistant materials and products for heat isolating during crystal growth
Etc . ，退火爐及單晶爐用發熱體硅化鉬，炭化硅，晶體生長和光學鍍膜用高純氧化物稀土氧化物，二氧化硅，三氧化鋁，二氧化鈦，三氧化二鈦，五氧化三鈦等，生長晶體用鎢鉬坩堝及鎢鉬製品和保溫用各種耐火材料及製品。Abstract : synthetic method of butyl butyrate was investigated using silicotungstic acid ca talyst absorbed on activated carbon
文摘:用活性炭固載硅鎢酸催化劑催化合成了丁酸丁酯。The ministry of finance and the state administration of taxation jointly determined to adjust export refund rates of the following products as of 1 may 2005 : ( 1 ) export refund rates of coal, tungsten, tin, antimony and their products decreased to 8 % ; ( 2 ) abolishing of the export refund tax of thulium, thulium oxide, salts of lanthanum, silicon metal, molybdenum ores and its fine ores etc
中國財政部、國家稅務總局決定自2005年5月1日起調整下列產品的出口退稅率： （ 1 ）將煤炭，鎢、錫、鋅、銻及其製品的出口退稅率下調為8 % ； （ 2 ）取消稀土金屬、稀土氧化物、稀土鹽類，金屬硅，鉬礦砂及其精礦，輕重燒鎂，氟石、滑石、碳化硅，木粒、木粉、木片的出口退稅政策。分享友人