对螺旋钻具输土速度与阻力进行理论分析,给出了输土速度公式和阻力公式。
The speed of soil delivering and resistance of auger drill are analyzed theoretically and their formulae are presented.
输沙渠道设计的基本关系式应是水流挟沙力关系、河相关系、水流连续原理及阻力公式。
The basic relationships used in the design of soil transferring channel are water silt carrying capacity, river phase, water continuity and resistance formula.
将分别对应于边壁和床面的爱因斯坦阻力公式应用阻力计算中,可以解决方程组不闭合的问题。
When the Einstein logarithmic resistance formula is used to calculate the resistance of sidewall and bed flow respectively, the closure problem of equation group can be solved.
本文推导了该舰炮后座和复进过程的液压阻力公式,为对该炮进行反面设计提供了必要的技术储备。
In this paper, the formulae of hydraulic resistance for this naval gun's recoil mechanism is derived so that necessary technique can be provided for the reverse design to this naval gun.
本文还导得动平床情况下的流速分布公式、阻力公式和输沙率公式,使动床的水流运动和输沙过程得以联解。
The formulas of velocity distribution, flow resistance and bed load transport rate are obtained, in which the flow and sediment movement are considered simultaneously.
当然,还是棒球选手更了解现实情况,他们用特殊的抛球方式减小空气阻力,他们使球在飞行时带自转,这些公式就无法应用了。
Of course, in reality, the baseball player knows better They give effect to the ball, they deal with air drag they spin the ball, and then these equations are not valid.
推导出了中等稳定顶板条件下计算支护系统所需阻力和可缩量的公式,并进行了相应的模拟实验研究。
The formula of calculation of support system resistance and yieldability under condition of medium stable roof is derived and proved through eguivalent model testing.
提出了在上山坡道上的转向阻力矩、牵引力和功率的计算公式,并以水平地面的实测功率进行了验证。
The formulae for calculating the uphill steering torque resistance, haulage force and power are presented and the results are checked by the measured power on horizontal surface.
在对矿井铰接式车辆转向特性及受力分析的基础上,给出了转向正压力和转向阻力矩的新的计算公式。
This paper gives the new calculation formula of steering vertical force and steering resistance moment, on the basis of analysis of the steering feature and forces on mine articulated vehicles.
通过实测资料检验,计算值与实测值符合良好,表明该公式可以较好的反映游荡型河道阻力沿河宽分布的特性。
Compared with the observed data and the computed value, it is shown that the formula can represent the law of resistance transverse distribution in braided river.
通过导出简化的兴波阻力理论公式,提出一种运用线性兴波阻力理论进行船型设计与改进的方法。
After deriving a simplified formula based on the linear theory of wave-making resistance, a method for design and improvement the ship-form is proposed.
上述管道运动的阻力计算公式可直接应用于采矿系统的载荷分析。
Such calculation formula for resistance to motion also can be directly applied into the load analysis for mining system.
本文通过工程实例,对低压燃气供应工程设计中阻力取值方法进行了分析探讨,提出了取值公式,使原有的方法更为完善、准确、全面。
Analysis is done for sampling methods for resistance of low pressure gas pipeline through practical cases. Sampling formula is raised to make the previous method more complete and accurate.
本文提出了阻力线性假设,并结合河槽断面的具体情况,对河槽的断面平均流速公式进行了探讨。
This paper proposes a scientific hypothesis that the resistance is linear and suggests a sectional average velocity formula for river flow which reflects the character of river.
按不同流态及流区对明渠水流阻力系数的计算公式进行了归纳和总结。
The calculation formulas of the resistance coefficient in open channel flows were summarized according to different flow patterns and flow regions.
笔者将在此基础上.推导出履带式拖拉机的车辙大小的理论公式及其沿疏松土地行走时的运动阻力系数。
Based on the achievements obtained. the theoretic formula that determine the rut size of the caterpillar tractor and the friction drag coefficient of motion was deduced.
以水为实验介质,对SK型静态混合器流体湍流阻力进行了实验测量,回归出实验公式。
With water as experimental fluid, the turbulent fluid resistance in the SK static mixer was measured and the experimental formula was regressed by this experiment.
本文在大量实验资料的基础上,对现有两相流阻力计算公式进行了分析,指出了其中存在的问题。
On the basis of numerous experimental data, the existing equations for calculating the pressure drop of two-phase flow were analyzed and their shortcomings indicated.
介绍煤岩切割阻力试验和预测公式,以供轮斗挖掘机设计计算使用和参考。
This paper discusses test and determination of the predicting formula for cutting resistance cf coal and rock and be referred to use for design calculation of bucket wheel excavator.
并讨论了“圆型截面桩”与“矩形截面桩”极限阻力计算公式的近似转换。
Then the relationship of the ultimate resistance between round section pile and rectangle section pile is investigated.
本文试图通过建立双竖井隧道的活塞风计算公式,以解决双竖井隧道空气阻力计算的困难。
This paper attempts to establish a calculating formula of piston wind velocity in tunnel with double shafts to solve this problem.
运用保角变换和等值渗流阻力推得分支水平井(有公共点或没有公共点)产能公式。
The productivity formulas of branch horizontal wells which have or not have common joint are derived by applying conformal transformation and isopleth map of percolation resistance force.
本文应用船舶阻力经验公式,对三峡工程明渠施工通航船队,进行了航行阻力计算分析,并建立了水流阻力与航速;
By using the empirical formulae of the ship resistance, the sailing resistance computation of the ship team for Three Gorges Project open channel navigation has been conducted.
提供各阻力系数的经验计算公式和经验数据,并且举出两个例子供读者参考。
The empirical formulas. date of the coefficients of resistance and two examples are supplied for reference.
在该公式中,桩端土的静阻力可以直接从桩顶的加速度信号中获得的桩顶回弹和冲击力持续时间计算得到,并且计算结果和土阻尼无关。
In this method, the static resistance at pile toe can be calculated directly with the rebound at pile top and impulse duration from the acceleration signal at pile top.
结果表明,现场测试值与计算值总体趋势相同,柱塞的下行阻力都随流量的增加而增大,现场测试值与公式计算值基本相符。
The comparison between measured and calculated values generally shows the same trend and the downgoing resistance of plunger increases with flow rate in both cases.
在海洋工程领域,计算软管流体阻力采用莫里逊公式,其中阻力系数是双参数迎角和雷诺数的函数。
In ocean engineering realm, fluid drags are computed by Morison equation with drag coefficient defined by a function of Renold number and attack Angle.
文中介绍了计算链带阻力和驱动功率的公式及设计参数。
This paper represents calculation formulas for chain belt resistance and driving power, giving design parameters.
文中介绍了计算链带阻力和驱动功率的公式及设计参数。
This paper represents calculation formulas for chain belt resistance and driving power, giving design parameters.
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