锹和耙的手柄较长,可发挥较好的杠杆作用。The spade and fork have longer shafts, providing better leverage.一只普通的手柄就可以手动操作这个装置。The device is manually operated, using a simple handle.手柄很不灵活,你必须用力推才能转动它.You have to push on the handle to turn it ...
那些在平面上定向的氢叫做平伏氢.Those that are aligned in the place are called equatorial hydrogens.与平面垂直定向的氢叫做直立氢.Those that are aligned perpendicular to the plane are called axial hydrogens.提出了一种可用于战场声目标定向的鲁棒自适应时延估计算法.Robust delay est...