Lignite oil is creosote derived from lignite tar.褐煤油是从褐煤中得来的防腐油.Therefore, the conventional gas content measurement is invalid to lignite.因此, 传统的煤层气含量确定方法不适用于褐煤.We use the best lignite or peat, activity humic acid sodium...
我该穿常礼服,还是燕尾服?Am I to wear a dinner - jacket or tails?他穿着常礼服, 他的官职金项圈挂在脖子上.He was dressed in his official morning coat, with his chain of office about his neck....