Shares in ARM were up 3.1 percent at 399.7pence by 0817 GMT, the top riser in the FTSE 100 index (.FTSE), and setting aeight-year high for the second consecutive day.
截止格林威治标准时间0817,ARM股票上扬3%,涨399.7便士,为伦敦金融时报100指数涨幅最大的股票,并连续第二天创八年新高。
The perfermance test on a commercial riser cracker shows that meta-Y-3A molecular sieve cracking catalyst is of high activity and improved gasoline selectivity.
偏Y-3A分子筛裂化催化剂在提升管催化裂化工业装置上使用试验的结果表明,该催化剂的裂化活性较高,汽油选择性较好。
The causes behind breakage of the catalyst are excessive sodium and vanadium content in the feed oil, excessively high regeneration temperature and excessively high steam velocity in riser pipe.
对催化剂的分析表明,催化剂破碎主要由于原料中钠、钒含量超标、再生温度过高和提升管预提蒸汽线速过高所致。
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