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1.A Discussinon about the Pendulum Arm Length for Spinning Ramie Staple
?麻长纤纺细纱机牵伸摇架长度探讨收藏指正
2.a hypothetical pendulum suspended by a weightless frictionless thread of constant length.
悬浮在一定长度的无摩擦力的细丝上的假定钟摆。收藏指正
3.Results: 37 patients treated for 18.2±4.5 weeks with pendulum appliance were accomplished . The increase of arch arc length between the maxillary first molars was (17.36±4.38) mm, the decrease of anterior arch width (-3.04±1.59) mm, and the decrease of posterior arch width (-1.29±2.01) mm .
结果 :3 7例患者在 18.2± 4.5周内双侧第一磨牙之间的牙弓弧形长度增加 (17.3 6± 4.3 8)mm ,伴牙弓前段宽 (-3 .0 4± 1.5 9)mm ,后段宽 (-1.2 9± 2 .0 1)mm的缩小 ,统计分析显示这些差异具有高度显著性。收藏指正
4.during the produce of the bar rolling mill, PENDULUM SHEAR cropping quality are effected badly by magnetic chain and conveyor speed measure roller , many machine failure by magnetic chain and conveyor speed measure roller caused quality accident as the bar cropping slanting ,the length not identical and nicety.
在棒材生产线中,磁性链、测速辊对摆剪剪切质量影响较大,因磁性链及测速辊等设备故障曾多次造成棒材切斜、长短不齐、定尺不准等质量事故．收藏指正
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