这是平面法向量，和沿直线向量的点积。
It's the dot product between the normal vector of a plane and the vector along the line.
研究长江感潮河段推移质输移规律和沿程分布规律。
Rule of bed load transport in tidal reach of the Yangtze river and distributing rule along the river are studied.
轻反光玻璃倒映出湖面、草坪和沿东、北、西立面的树木。
The lightly reflective glass mirrors the lake, lawn, and trees along the east, north, and west facade.
此外，基体件包括可围绕基体件旋转和沿基体件平移的夹具。
Additionally, the base member includes a clamp which can be rotated around the base member and translated along the base member.
有别于上的支持，船首高度较低，必须保持适当的对称性和沿宽度。
Unlike the upper support bow, the height of the lower bow must be maintain along with proper symmetry and width.
增大布水渠高度和沿池长方向上减小斜管管径有利于提高布水均匀性。
It was also concluded that increasing the height of the distribution channel and reducing the diameter of inclined tube would improve WDUT.
美国东北部和沿西海岸向南流动的加利福尼亚洋流的情况也有所改善。
It also found improvements in the northeastern United States and the California Current that flows south along the West Coast.
这就需要确定如何通信类和沿正在开发的系统进程的时间表发送邮件。
This entails determining how the classes communicate and send messages along the timeline of the system process being developed.
同一海况下，海面波动的时间过程和沿主波向的空间分布是明显不同的。
In the same sea state, the time process and the space distribution along major wave direction of the sea surface wave are apparently different.
这中间支撑结构进行了期刊和沿垂直于第一和第二，第三轴轴承对轴取向。
This intermediate support structure carries a pair of journals and bearings oriented along a third axis perpendicular to each of the first and second axes.
有一天，我打电话，他们告诉我这是好的，我只包游泳池和沿客人带来我的包。
One day I call up, they tell me it's fine, I pack my bags for just the pool and bring a guest along.
臂 的顶端部分是一体连接的并且各钩件可在周围旋转和沿所述顶端部分平移。
The top portions of the arms are integrally connected and the hook members can rotate around and translate along the top portion.
从节省篇幅和沿正史之续的角度考虑，文体上宜用简易明快之文言文叙事状物；
The simple and straight narration in classical Chinese is suitable to its style with the aim of space saving and continuation of history books written in biographical style.
建筑底座的提议用来保护住宅单元免于从道路和沿运河的步行道传来的噪音干扰。
The purpose of the building base is to protect the housing units from the noise nuisance coming from the road and the walkway along the canal.
在岁月的长河中，传统武术训练理论大致经历了三个阶段：原创期、轴心期和沿承期。
In the long period of time the traditional Wushu training theory has experienced approximately three phases, the creation period, the center period and the evolution period.
论坛，月台：高于邻近区域高度的水平的表面，如作为公众演讲的舞台和沿铁路线的平台。
A horizontal surface raised above the level of the adjacent area, as a stage for public speaking or a landing alongside railroad tracks.
其一是圆管层流（又称泊肖叶流动），得到其流量和沿管方向压力梯度之间的解析关系式。
One was the laminar flow in the pipe(also called the Poiseuille flow). The analytic form of the relationship between the flow rate and the pressure gradient along the pipeline was obtained.
要有效地控制火灾产生的烟气，就必须了解烟气在地铁站内的蔓延规律和沿程质量卷吸特性。
To effectively control the fire-induced smoke. it is necessary to get acquainted with the smoke movement and entrainment characteristics along the subway station.
第一部分介绍了分子马达的生物学研究进展，包括马达的种类、结构特征和沿轨道运动的性质。
In the first part, the biology study evolvement of molecular motor are introduced, including their categories, structure features and motion properties.
结果显示，杂质元素的含量偏高和沿晶界的偏析以及不均匀的钨晶粒是造成国产钨靶表面损伤的主要原因。
The results show that high content of impurity elements, segregation along grain boundaries and uneven grain size are main reasons for the surface damage of domestic tungsten targets.
本文建立的性能预测模型考虑了气相的可压缩性和沿流道的截面面积的变化，介绍了数值模拟的方法和步骤。
A performance prediction model is established in this paper which taking ac count into gas compressibility and the change of cross section area of flow channel.
再通过LANDMARK系统，进行显示和沿目的层作层位切片，为描述油藏的储集特征，提供了极好的手段。
To display by LANDMARK system and chip along target formation are good means for describing reservoir characteristics.
研究报告的作者说，因为反向旋转在黑洞和沿轨道运行物质之间形成更大的空间，也就为磁场的形成留下了更多的空间。
That's because the backward rotation puts more space between the black hole and the orbiting matter, leaving more room for magnetic fields to build up, the study authors say.
建立了该条件下的焊接热源模型，热源模型由作用在工件表面的高斯面热源和沿激光入射方向的旋转高斯体热源构成。
A heat source model, which comprises a gauss plane heat source on the top surface and a revolved gauss body heat source, was presented in this condition.
请在此精度的一部分。它应该有如下的尺寸为鞠躬。有别于上的支持，船首高度较低，必须保持适当的对称性和沿宽度。
Check this part for accuracy. It should have the dimensions as shown below. Unlike the upper support bow, the height of the lower bow must be maintain along with proper symmetry and width.
采用螺旋理论，首先分别建立了3 -UPU并联角台机构在初始位形下和沿x轴方向发生移动后的一阶影响系数矩阵。
Based on the screw theory, the first-order effect coefficient matrixes of a 3-upu parallel pyramid mechanism under initial position and movement along X-coordinate axis are established.
两个世纪以后，西班牙人定居在大部分南美和沿西北海岸的我们现在所称的美国。第一个西班牙去加州，大多数都是虔诚的教徒。
Two centuries later, the Spanish had settled in most parts of South America and along the northwest coast of what we now call the United States.
结果表明： 轧制表面层的粗晶、混晶和沿轧向的分层是引起表面微裂纹的重要原因，而氧与氮含量较高对冷弯性能有不利影响；
The microstructure was observed. The results show that the surface microcrack formation on container plate was mainly related to the gross grain and mixed grain in the surface of plate.
结果表明： 轧制表面层的粗晶、混晶和沿轧向的分层是引起表面微裂纹的重要原因，而氧与氮含量较高对冷弯性能有不利影响；
The microstructure was observed. The results show that the surface microcrack formation on container plate was mainly related to the gross grain and mixed grain in the surface of plate.
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