spread blade

基本解释

The diseased tissue spread quickly under higher humidity, that ultimately led to collapse of the whole leaf blade.
在潮溼情況下病痕擴展迅速，以致全葉軟腐塌萎。
With the wide use of Horizontal-axis wind turbine, the design of blade shape and the research of aerodynamic characteristics have been attracting wide-spread attention.
隨著大型水平軸風力機的廣泛使用，葉片的外形設計和氣動性能研究受到廣泛的關注。
The 300 holes in each blade, most of them thinner than a human hair, are engineered to spread a coat of cool air over the spinning blades so they aren't melted by 3,000F exhaust gases.
每一個渦輪機葉上有300個小孔，這些小孔大多數比人的頭發絲還要細，它們會被一層冷卻空氣所覆蓋，以免被3000F的高溫所融化。