In recent years, Aedes albopictus, a secondary dengue vector in Asia, has become established in the United States, several Latin American and Caribbean countries, parts of Europe and Africa.
白纹伊蚊是亚洲第二种登革热传播媒介，近几年已在美国、几个拉丁美洲和加勒比国家、部分欧洲和非洲国家扎下了根。
Orientation can be difficult to perceive with some shapes or at small sizes, though, so it's best used as a secondary communication vector.
在某些形状下，或者尺寸较小时，方位是比较难以察觉的，因此它最好作为次要的传达矢量。
To solve it, secondary TIN construction was conducted to simplify the calculation mode by solving vector triangle calculation so as to facilitate the automatic realization by computer.
为了解决这些问题，采用二次构tin法，通过解算矢量三角形，使计算模型简单化，以便于计算机自动化实现。
The main content: vector algebra, plane and linear space, special surfaces and secondary surfaces, general quadratic surfaces and general quadric surface.
主要内容有：向量代数、空间的平面和直线、特殊曲面和二次曲面、一般二次曲面和一般二次曲面。
The secondary velocity vector plots show that the migration of the secondary vortex across the main flow was influenced by flow rates which made the centrifugal and Coriolis force changing.
二次流矢量图表明流量的改变影响了离心力和哥氏力在流动中的作用，导致在垂直于主流方向引起截然不同的二次涡旋流动。
Computational investigation of secondary flow thrust vector control technology used in a convergent-divergent nozzle;
采用六分力试验技术对某推力矢量发动机燃气舵的气动特性进行了试验研究。
Along with the increase of the secondary flow pressure ratio, the shock move toward upstream divergent section and the thrust vector angle gradually increases;
次流压比的增加将导致激波向扩张段上游移动，且喷管矢量角不断增加；
Sophisticated and powerful idioms such as this are pushing the old-fashioned menu bar further into the background as a secondary command vector.
工具栏这种精巧而强大的习惯用法，现在又把老旧的菜单栏推到自己的后台，作为第2级的命令访问途径。
The results show that the distribution of wet % Q % -vector indicates the direction and intensity of the secondary circulation. The heavy storm rain may occur when the mesoscale circulation enhanced.
结果表明，湿q矢量散度场的分布反映了次级环流的方向和强弱，暴雨出现在中尺度环流明显增强时。
The results show that the distribution of wet % Q % -vector indicates the direction and intensity of the secondary circulation. The heavy storm rain may occur when the mesoscale circulation enhanced.
结果表明，湿q矢量散度场的分布反映了次级环流的方向和强弱，暴雨出现在中尺度环流明显增强时。
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