The shedding cycle of jet hole vortex in leading edge is shorter than that of downstream.
前缘射流孔旋涡的脱落周期比下游射流孔旋涡脱落周期短。
Theoretical calculations are made of the effect of the jet hole on gas motion inside the TJ-jet combustion chamber of 492qs gasoline engine during compression and combustion processes.
通过理论计算研究了492QS汽油机射流孔对射流燃烧室内气体运动的影响。
Astronomers think Swift has a dead-on view of the digestive system of a black hole, which is blasting out a jet of energy as it RIPS apart a star trapped in its gravitational fist.
天文学家认为，雨燕观测到的是黑洞吞噬其它恒星的场景，即黑洞在将恒星撕碎并拖进它的重力陷阱的瞬间释放出的能量。
The jet is powered by accretion onto a supermassive black hole, one of the most massive black holes yet discovered.
喷流由（星系核心的）超大质量黑洞补充（物质、能量），该黑洞是已知质量最大的黑洞之一。
The X-ray jet in the upper left extends for about 13, 000 light years away from the black hole.
左上的X射线喷流从黑洞延伸到13000光年远。
Using the method of jet welding dismantling these through-hole components to avoid these problems.
采用喷流焊的方法拆除这些通孔元件可以避免这些问题。
The discharge coefficients of the side-wall outflow hole are affected by the jet angle and cross-flow mass flow rate.
不同射流角度和横流流量对侧壁出流孔流量系数影响很大。
Introduce the basic principles, equipments, techniques and spot experimental conditions of expanded hole of technology of rotation jet.
介绍了旋转射流扩孔技术的基本原理、设备、工艺以及现场的试验情况。
The formula for an expanding hole in a thin moving plate due to the jet is derived.
推导了运动薄板受射流作用的扩孔公式；
It hums like a bee on the tea-table, and the steam rises in a little jet from a tiny hole in the top. The boiling water comes out of a tap at the bottom.
放在茶几上，它会像蜜蜂一样嗡嗡作响，蒸汽从顶上的一个小孔钻出来往上升，热水可以从下边的一个水龙头放出来。
For this reason, the well designer generally seeks to maximize the fluid velocity (or other measure of jet energy) to achieve maximum cleaning at the bottom of the hole.
正因为这一原因，井眼设计人员一般寻求使流体速度(或其它射流能量)最大化的方法去达到最大程度地清洁井底的目的。
First, there is no slope hole or silo, the auxiliary hole of construction adopts longitudinal ventilation only by jet Second, it belongs to deep buried hole, long body, little shape section.
第一辅助洞没有斜井或竖井，施工辅助洞采用全射流纵向通风。第二辅助洞埋深大，洞体长，洞形断面小。
The hole enlargement by high - pressure water jet provided a feasible technical way for raising gas drainage effect from coal seam in low permeability and improving the effect of outburst pre...
高压水射流扩孔为提高低透气性煤层的瓦斯抽放效果和扩大防突措施的效果提供了一个可行的技术途径。
The test results show that there exists an evident wake zone near the downstream of the cooling hole jet-flow.
实验结果表明，冷却孔射流下游附近存在明显的尾迹区域。
In this paper the relation between the hole diameter and the pile thickness of the jet on the hole bottom for a jet penetrating or drilling process is theoretically examined.
本文在理论上探讨了射流在侵彻或钻孔过程中，孔径和射流在孔底的堆积厚度之间的关系。
In order to explore the effect of ambient pressure on jet flow field in deep well and ultra-deep well, a physical model for flow field of confined water jet at bottom hole was established.
考虑到深井、超深井中井底围压对射流流场有一定的影响，建立了井底受限射流流场的物理模型。
The influence of inner cone hole depth changes on the jet performance is investigated by numerical simulation and experiment.
通过数值模拟和实验测试相结合，研究了锥孔深度变化对外部射流的影响。
The law conversation of energy and the hole diameter formula of jet perforating are employed to deduce the relationship of diameter and velocity of jet for cylindrical hole of perforation concrete.
文中根据能量守恒原理及侵彻孔径公式，推导了获得圆柱形穿孔的射流直径与速度的关系。
This paper introduces the momentum and flow field of tiny-hole jet-flow in high-pressure homogenization processing by applying fluid dynamics.
本文应用流体力学理论分析了高压均质过程中，微孔射流内动量及流场结构。
The vibrating-hole jet grouted cut-off wall has been applied to the construction cofferdam for the power resource station at the Three Gorges project (TGP).
三峡工程电源电站施工围堰防渗采取了振孔高喷防渗墙的形式。
When the inclination angle of a side nozzle is 0, 30,45 and 60 degrees, the eddying flow of the bottom hole vortex device will cause rotation at the bottom hole, affecting on the jet from bit nozzles.
侧喷嘴倾斜角度在0度、30度、45度和60度情况下，由于井底涡旋器的旋流作用，导致井底产生旋转，对钻头喷嘴射流产生了影响，以致在45度时出现压力损失最小的情况；
A number of self-excited resonant pulse jet nozzles for deep hole bits were designed on the basis of theoretical analysis and experimental results.
在理论和实验研究的基础上，设计了几种用于牙轮钻头的自激振荡脉冲喷嘴，在常压下进行了射流脉冲压力测试和冲蚀天然红砂岩的实验。
Flip energy dissipation is widely applied in the project of energy dissipation, to get the maximal jet trajectory length and the minimum scour hole is requested by the principle of flip flow.
挑流消能在消能工中有着广泛的应用，挑流原则要求获得最大的挑距和最小的冲坑。
The drilling rig is mainly used in soil and rock anchoring, consolidation of road base, dam base and retaining wall, and blasting hole drilling and jet-grouting.
该钻机主要用于土、岩锚杆、路基、坝基、挡土墙加固、爆破孔等钻孔工程以及高压旋喷孔的施工。
A saddle point and horse shoe vortex were formed in the front of the hole because of the rigid body character of coolant jet near the hole.
射流在出口附近具有刚体的特性，并在射流前方形成了鞍点及马蹄涡。
The invention also provides a method for preparing isocyanate by adopting the dynamic hole jet reactor.
本发明还提供了采用该反应器制备异氰酸酯的方法。
The invention also provides a method for preparing isocyanate by adopting the dynamic hole jet reactor.
本发明还提供了采用该反应器制备异氰酸酯的方法。
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