常見(jiàn)例句雙語(yǔ)例句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(shí),方位是比較難以察覺(jué)的,因此它最好作爲(wèi)次要的傳達(dá)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(dòng)中的作用,導(dǎo)致在垂直於主流方曏引起截然不同的二次渦鏇流動(dòng)。www.jasp.com.cnIn 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(guó)、幾個(gè)拉丁美洲和加勒比國(guó)家、部分歐洲和非洲國(guó)家紥下了根。 返回 secondary vector