leff 中文意思是什麼
leff
解釋
萊夫-
3. the distance of metal wire and ground is smaller, the effective permeability leff, quality factor q and resonance frequency srf is also smaller ; the coil turns increases leff will increase, the q value and resonance frequency srf will drop ; the line width increases leff will drop, resonance frequency srf will increase and the q value is nearly invariable ; the via size, the pad layer size and thickness is little effect the effective permeability leff and resonance frequency srf but seriously influence q value
3金屬導線離地的距離越小，有效電感值leff 、品質因子q 、自諧振頻率srf也越小;線圈圈數增加， leff增加， q值和自諧振頻率srf下降;線寬增加， leff下降自諧振頻率增大q值幾乎不變;通孔大小、覆蓋層的大小及厚度對有效電感值leff和自諧振頻率srf沒有多大影響，但對q值影響較大。 -
The biomenchanicai study shows the stress and dispiacement measurements in aht - avb group was iess than in iiiac group and controi group in various modeis such as flex, extension, leff and right bending ( p < 0. 01 ). the torsion stress in both iiiac and aht - avb groups were greater than in control group which indicated a deficiency of anti4orsion ability of aht - avb. with additional anterior piate or pedicle screw, their stabiiity in varies modeis jncluding torsion all increased and greater than in control group
生物力學測試結果顯示人工椎體在屈曲、伸展、左右彎曲、扭轉等工況下應變較對照組及髂骨植骨組小，位移測試結果小於對照組及髂骨植骨組（ p 0 . 01 ） ；髂骨植骨組及人工椎體組在扭轉狀態下其應變及位移均大於對照組，提示旋轉性能不足；附加前路或後路內固定后? ? ? ? ? ? ? ?其各個工況下強度及剛度均明顯增加且均大於對照組。
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