d double meaning in English
双重的，对偶的
Examples
- D double - deck semi - open - top tram
( d )双层半开逢式 - The deficient mill output has been finally resolved by two renovation programs for the classifier and the central air pipe of d - 12 - d double - in and double - out mill , one of the biggest pulverizes ; higher ah inlet gas temperature and exhaust gas temperature also rectified by refractory modification and the tuning of sootblower " s running mode
对世界最大的d - 12 - d双进双出磨煤机的分离器和磨煤机中心风管等部位通过两种方案的改造试验最终解决了该磨煤机的出力不足问题；通过对卫燃带改造和调整吹灰器的运行方式解决了空预器入口烟温和排烟温度高的问题。