1) friction resistance force between subgrade and concrete pavement
板底摩阻力
2) bottom friction
底部摩阻力
3) frictional drag of sea bottom
海底摩擦阻力
1.
Based on a simple two layered marine model,the paper seeks a solution of marine seismic wavefield formed by the source in water when frictional drag of sea bottom can be neglected,gives a receiving character on sea bottom multi component receiver and obtains theoretic sea bottom multi component records from source in water by Fourier method.
本文根据两层简单海洋模型 ,在忽略不计海底摩擦阻力的条件下 ,求解水中震源所形成的海洋地震波场 ,给出海底多分量的接收特性 ,进而用傅里叶方法得到水中震源的海底多分量理论记录。
4) dissipation due to bottom effect
底摩阻损耗
5) bottom friction factors
底摩阻系数
1.
The most representative methods of wave breaking indices are proposed by Goda and Nelson, but both of them can not reflect the influence of the bottom friction factors and the wave asymmetry on the breaking indices.
已有的研究中最具代表性的是合田良实和澳大利亚Nelson所提出的方法,但合田公式与Nelson公式均未反映底摩阻系数及波形不对称性对破碎指标的影响。
6) Frictional Resistance
摩擦阻力
1.
Influence of the frictional resistance for deadline anchor axis on weight indicator accuracy;
死绳固定器轴上摩擦阻力对指重表精度的影响
2.
Influences of frictional resistance on flow distributions of the dividing and combining manifolds;
摩擦阻力对分流和汇流联箱流量特性影响
3.
A method for lateral buckling analysis of tubing with frictional resistance in deviated wells was presented.
提出了在斜直井中钻柱正弦屈曲分析时对摩擦阻力的处理方法,给出了考虑摩擦阻力时的屈曲平衡方程,建立了相应的微分求积法列式,用微分求积法时平衡方程直接求解。
补充资料：风流摩擦阻力
风流摩擦阻力
friction resistance of airflow
卞engi一u moeo zull风流摩擦阻力(frietion resistanee of airflow) 风流与井巷周壁间摩擦和风流微团或流层间摩擦所产生的切应力。风流以层流状态沿井巷流动时，摩擦阻力与平均风速的一次方成正比;风流以稳定紊流状态沿井巷流动时，摩擦阻力与平均风速的二次方成正比。矿内风流多属稳定紊流，摩擦阻力等于井巷风阻与风量平方之积: 凡一尺fQZ _a尸L R一‘汁于二 S3式中hf为紊流摩擦阻力，Pa;尺f为井巷的摩擦风阻，N‘52/m“，其值取决于井巷的几何尺寸和周壁的粗糙度，与风量无关;Q为流过的风量，m“，/s;尸为井巷净断面的周边长，m;L为井巷的长度，m;S为井巷净断面面积，mZ;a为井巷摩擦阻力系数，N·52/m书。井巷摩擦阻力系数，是由井巷周壁的粗糙度和流过井巷空气的密度所决定的常数。混凝土砌碳的巷道，。为。，。。4一0.。。8，无支护巷道为0.008~。.016，木棚和其他棚架支护巷道为0.016一。.024，有装备物的井筒为().024~0.050。 (陈旺星)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条