在联欢晚会上大家都非常愉快.Everybody enjoyed himself ever so at the evening party.在这次圣诞节联欢会上我们玩得很不愉快.We had a ghastly time at the Chritmas party.希德生病,没法和大家联欢, 玛丽留 在家中陪他玩.Sid was sick and had to miss the fun; Mary remained at home to ...
Two kind of separated perforating and pulse fracturing composite charges are studied.论述了低渗油气层的地质特征;研究了两种分离式射孔脉冲压裂复合弹.Macroscopic deviations from isotropy occur due to bedding, schistosity and also sometimes fracturing.与各...