查询词典 pitch-black

A set of fundamental equations that consist of four formulae and contain seven pitch parameters is established through the pitch cone geometrical relationship of a pair of hypoid gears.

通过准双曲面齿轮副的节锥几何关系，建立了包含7个节锥参数并由4个方程构成的节锥参数基本方程组。

Hypoid gear ; pitch cone ; pitch parameter ; geometrical design

准双曲面齿轮；节锥；节锥参数；几何设计

Based on the 3D solid model, the changing trend of spiral angle and pressure angle of pitch cone, the thickness-changing trend of face and pitch cone can be analyzed. In addition, the method of cutting tooth on general NC machining center and the measurement of tooth flank geometry on 3D CMM are conducted.

根据锥齿轮切齿仿真所获得的三维几何模型，本文还研究了在通用四轴联动加工中心上加工锥齿轮齿形的方法和在通用三坐标测量机上进行锥齿轮齿面几何形状误差测量及数据处理方法。

Thread Snap Gages—Minimum Material: Pitch Diameter Cone Type and Vee and Thread Groove Diameter Type for inspecting the minimum-material limit pitch diameter.

螺纹卡规—最小材料：中径为锥形及V形及螺纹为凹槽形的直径，是用于检查最小材料极限的中径。

Through rotary joint, the high pressure oil from machinery space is sent to the actuator (pitch safety cylinder and pitch control cylinder) in the hub.

通过旋转接头将机舱内的高压油送到轮毂内的执行机构。

For the first time, a screw pile and pile driver system for preventing flood and rushing to deal with an emergency was manufactured. The screw piles of the system is different from screw drills used to sap, and it doesn't push soils out. Analyses, including the screw pile's structural strength analysis and the screw blade's welding analysis, were done by ANSYS, which showed that the screw pile's structural strength is enough and that the distort of the screw blade is small. Testing on the screw pile and pile driver system showed that the system performed stably and could meet the need of preventing flood and rushing to deal with an emergency. A mechanics model of interaction of a screw pile and soil was built, and expressions of torque of screw pile's cylindrical part on the condition of screw pile's crew part being driven into soil fully were gained, then the relation of the torque with screw pitch and out diameter of cylinder, which shows the torque decreases with the screw pitch increasing, and that the torque increases with the out diameter of cylinder increasing, which was according with the experiments of the screw pile's being driven into soils, and thus a screw pile with the best structure was chosen. Experiments of bionic surface showed that, on the condition of certain pressure on the surface, the protruding bionic surface can not reduce adhesion and resistance and that the corrugated bionic surface can reduce adhesion and resistance. An orthogonal experiment of the corrugated bionic surface was done with the factors including the width of protrusion, the space between two protrusions, the trolley's velocity and the vertical surface pressure and with the surface frictional coefficient as the experimental target, and some inclusions were drawn that the best combination of the factors was acquired and that the width of protrusion affected the surface frictional coefficient remarkably.

研制了防汛抢险螺旋桩机系统，提高了沉桩作业效率；利用ANSYS对桩体进行整体结构强度分析以及螺旋叶片的焊接分析，表明桩体结构强度足够，焊接过程中，螺旋叶片的变形小；对整个螺旋桩机系统进行试验，表明该系统性能可靠，工作稳定，作业效率高，能够满足防汛抢险沉桩作业基本需要；建立了螺旋桩桩土作用力学模型，得出螺旋桩沉桩过程中螺旋桩螺旋部分完全进入土体时螺旋桩圆柱部分所受扭矩以及扭矩与防汛抢险螺旋桩的螺旋导程和圆柱外径的关系曲线，表明螺旋桩螺旋部分完全进入土体时螺旋桩圆柱部分所受扭矩随着螺旋导程的增大而减小，随着圆柱外径的增大而增大，这与螺旋桩沉桩试验结论相符合，据此优选出最佳结构的螺旋桩；仿生曲面试验表明，尺寸较小的球冠突起型仿生曲面在一定压力作用下未能起到减粘降阻的作用，而尺寸较大的波纹型仿生曲面相对平板具有一定的减粘降阻作用；以波纹型仿生曲面突起宽度、波纹型仿生曲面两突起之间间距、台车的牵引速度以及叶片表面垂直载荷为因素，以曲面摩擦系数试验指标进行正交试验，寻求出在一定试验条件下最佳因素水平组合；波纹型仿生曲面突起宽度在本试验条件下对曲面摩擦系数影响显著，而其它几个因素对曲面摩擦系数影响均不显著；通过波纹型仿生曲面突起宽度和台车牵引速度的单因素试验，表明曲面摩擦系数随着仿生曲面突起宽度的增大而减小，而随着台车牵引速度的变化基本保持不变，和正交试验结果保持一致。

The acoustical and statistical tests showed that energy, duration and pitch are not equivalent factors in determining a boundary; that is, the energy was the most obvious factor while the pitch was the most obscure.

这不是按照构成节奏边界的声学因素的重要性排列的，而是在语图中能较容易辨别出的声学因素的顺序。要正确判断节奏边界，必须在CSL画面中显示所有声学因素的画面并且考虑所有的声学因素。

The results showed that the forming of calcium ions was a significant factor affecting the pitch deposition, and the deposition was related to not only the amount of calcium soaps but also their dispersion, and the better the calcium soaps dispersion, the less the deposition, pH value influenced the pitch deposition significantly.

研究结果表明，Ca~(2+)的存在是造成树脂沉积的重要因素，树脂沉积的多少不但与钙皂的多少有关，而且还与其在体系中的分散程度有关，钙皂分散得越好，树脂沉积越少。

The paper points out that the difference between the start point and each pitch is not independent,though each pitch is measured independently,and all of them are the function of measured value L.

本文指出测量平面度误差，尽管每个节点是独立测量的，但每个节点和开始点的高度差并不是独立的，且都是测量值L的函数。

In under the new flow control frame, the distributional parallel firewall system single pitch point has used improved the flow control mechanism, and passes the Hasche algorithm to come in the balanced system each pitch point current capacity.

在新的流量控制的框架下，分布式并行防火墙系统的单个节点使用了改进了的流量控制机制，并通过哈希算法来均衡系统中的各个节点的流量。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。