George struggled wildly, going under and resurfacing at regular intervals.乔治疯狂地挣扎，不断在水面上浮浮沉沉。Make a point of backing up your files at regular intervals.一定要定期备份文件。The cartridge must be replaced at regular intervals.弹药必须定时...
High ductility and excellent bendability to form bends, loops and complicated configurations without fracture.良好的延展性和成行性,可弯制各种曲及复杂的形状且不断裂.The larger the thermal gradient, the lower the anisothermal ductility.温度梯度越大, 不等温韧...