The plane made a smooth landing.
飞机平稳降落。
The cart moves along a perfectly smooth and horizontal plane after the push.
小车在被推之后，就沿着绝对光滑的平面运动。
Plane blade cutting, manual cutting feed, and with smooth end surface.
平刀裁切，手动进刀，端面平整。
Smooth running, more efficient completion of high-quality crystal plane processing;
运行平稳，更能高质量效率完成晶面处理工作；
Smooth running, more efficient completion of high-quality crystal plane processing;
运行平稳，更能高质量效率完成晶面处理工作；
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