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- upper and down crossheading 上下顺槽
- The old man stared the uninvited guest up and down. 老人把不速之客上下打量了一番。
- A comparison of WVD, PWVD, SPWVD used for demodulating FSK signal is discussed, and the upper and down side frequencies estimating algorithms based on SPWVD are chosen in the paper. 文中对FSK信号的WVD、PWVD和SPWVD结果作了比较，选择了基于SPWVD来估计FSK信号的上下边频，并给出了具体的算法步骤。
- He's between the upper and nether millstone. 他深受上下夹攻。
- He was walking up and down the station platform. 他在火车站的月台上走来走去。
- They were jigging up and down to the music. 他们随着音乐的节拍轻快地上下跳着。
- Safety Coal Winning of Upper and Down Coal Seam 上、下层工作面的安全回采
- He leapt up and down in sheer outrage. 他气得暴跳如雷。
- Upper and down fixed cover of empennage 尾翼固定上下盖
- He got up, and began to pace up and down the room. 他起身并开始在房间里踱来踱去。
- We have looked for it up and down. 我们到处都找过了。
- She paraded up and down in her new hat. 她戴著新帽子在人前走来走去。
- The angle at which the upper and lower teeth meet; occlusion. 牙齿的咬合上下齿的咬合情况; 牙咬合
- The boy stared up and down at his reviler. 男孩子上下打量这个谩骂他的人。
- A little bird was bobbing its head up and down. 一只小鸟把头上下快速摆动著。
- He's caught between the upper and nether millstone. 他陷于困境中。
- He pumped my hand (up and down) vigorously. 他握住我的手用力地(上下)摇晃。
- We bumped up and down along the gravel path. 我们沿砾石小路颠簸而行。
- Remove the upper and lower ball stud nuts. 拆卸上、下圆顶螺栓。
- There are upper or lower or upper and lower vents. 溶剂柜上部、下部、上下部有通风口。
