secondary vector

基本解释

Orientation can be difficult to perceive with some shapes or at small sizes, though, so it's best used as a secondary communication vector.
在某些形狀下，或者尺寸較小時，方位是比較難以察覺的，因此它最好作爲次要的傳達矢量。
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.
二次流矢量圖表明流量的改變影響了離心力和哥氏力在流動中的作用，導致在垂直於主流方曏引起截然不同的二次渦鏇流動。
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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.
白紋伊蚊是亞洲第二種登革熱傳播媒介，近幾年已在美國、幾個拉丁美洲和加勒比國家、部分歐洲和非洲國家紥下了根。