But for the continuous jet which velocity gradient is not linear, it has not only one virtual origin.
但对于非线性速度分布的连续射流，存在的虚拟原点不是唯一的。
The radius variation of the jet in the motion process is deduced based on the virtual origin concept.
基于虚拟原点概念推导了运动过程中射流径向尺寸变化规律。
The classical penetration equation based on the virtual origin theory can well describe the penetration behaviour of the continuous jet with linear velocity distribution.
对于沿射流长度方向具有线性分布速度的连续射流，经典的基于虚拟原点理论的射流侵彻关系式能很好的描述其侵彻行为。
This paper discussed the origin and concept of virtual reality agriculture and its application to agriculture.
本文论述了虚拟农业的由来、念，以及虚拟现实技术在农业上的应用状况。
The paper firstly introduces the origin, conception and prerequisites of virtual network operation, and mentions virtual network operation pattern too.
首先给出虚拟电信运营的来源、概念和前提条件，进而引出对虚拟电信运营模式的讨论；
This paper presented a general description about the origin, theory, advantages of the virtual endoscopy.
本文对虚拟内窥镜的起源、原理、优点作了一个较为全面的综述。
The article introduces the origin, concept, characteristic and service application of virtual routers in ATM exchanges and also brings up a specific case of service applications.
介绍了在AT M交换机上虚拟路由器技术的由来、相关概念、技术特点、业务应用等，列举了一个具体的业务应用实例。
This paper discussed the origin and concept of virtual reality agriculture and its application to agriculture.
本文论述了虚拟农业的由来、概念，以及虚拟现实技术在农业上的应用状况。
CAD system is the digital origin and basis of VM (virtual machinery) focused on design.
CAD系统是以设计为中心VM的数据起源和基础，也是实施虚拟制造的基础。
The method of virtual photograph is used to generate relief textures corresponding to the origin model that is simplified to six relief textures and a cuboid later.
提出了一种采用浮雕纹理贴图技术对复杂网格模型进行快速显示的方法，采用虚拟拍照方法生成原始模型相应的浮雕纹理，将原始模型简化成六幅浮雕纹理和一个长方体。
The method of virtual photograph is used to generate relief textures corresponding to the origin model that is simplified to six relief textures and a cuboid later.
提出了一种采用浮雕纹理贴图技术对复杂网格模型进行快速显示的方法，采用虚拟拍照方法生成原始模型相应的浮雕纹理，将原始模型简化成六幅浮雕纹理和一个长方体。
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