anhydrous ammonia短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 无水氨 Advantages and disadvantages of the SNCR denitrification systems were separately compared by using different reactants, such as aqueous ammonia, anhydrous ammonia and urea etc. 对分别选用氨水、纯氨及尿素作反应剂的 SNCR脱硝系统的优缺点进行了比较。 dictall