夏＼∥云j+万l∥瓦j+瓦l∥瓦j+瓦【削删J 式中．五是第二粘度（second viscosity），一般可取五＝一2／3。 一般来讲，t、s，和s：是小量，对于粘性为常数的不可压缩流体， sx＝s’．＝s：＝0。
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...ττ=µ∂=+∂ (2-17) ()xzzxzxττ=µ∂=+∂ (2-18) 10 式中，µ 是动力黏度(dynamic viscosity), λ 是第二黏度(second viscosity)，2/3λ =。
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Researches have been carried out in the second reservoir by physical modeling method to find out the formula weight of the polymer, injection rate, slug size and viscosity of the polymer solution.
通过物理模拟方法，研究杏北油田二类油层聚合物相对分子质量、注入速度、段塞大小、聚合物溶液黏度、不同注聚方式对驱油效果的影响。
The second part includes a curing agent and a particulate filler of a type and amount required to achieve the desired viscosity.
第二部分包括要达到需要的粘度所要 求的类型及数量的固化剂和粒状填料。
The second purpose is the pyramid spiral rod could realize a smash function for powders during screw propulsion, in particular applied to the powder filling with the large viscosity.
目的之二是棱柱形螺杆柱可在螺旋推进 中对粉剂实现打碎功能，尤其适用于粘度较大的粉剂分装。
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