1. 前沿：光孤子大多存在具有波形的媒介中,在光纤应用中,光孤子能在非线性射散迁移光纤中产生,其每个脉冲的后沿(trailing edge)均快于前沿(leading edge). 如此在光纤长度内,波的峰值放大率将会增加而非减少,从而在不使用增益器情况下产生惊人的放大率.
2. 翼前缘：通常设计图上都有标示最高线所在,若图上没有标示,则可自行将其标在翼弦(Chord)长度之30%~35%处.接着在最高线距翼前缘(Leading edge)的 1/2处画上一条线,及最高线离翼后缘(Trailing edge)的 2/3处画上一条线.并在翼前缘及后缘各画上一条高度约1mm左右的水平线.
3. 导缘：辅旋翼的直径较小,转向与主旋翼相反,藉以抵消可能造成机身旋转的主旋翼反作用力. 主旋翼的叶片数,少者二叶,多至七叶. 各叶片的导缘(leading edge)均朝上形成一倾角(相当於螺距角pitch angle),以便使叶片与气流之间存在一攻角(angle
1. 尖端领域；高新领域；最前沿
The leading edge of a particular area of research or development is the area of it that seems most advanced or sophisticated.
e.g. I think Israel tends to be at the leading edge of technological development.
我认为以色列在技术发展领域往往处于最前沿。
1. One of the adjudicators Victor Sit said Hong Kong enjoys a leading edge in the financial industry and also in the free flow of information.
2. danci.911chaxun.com
2. The first two phases covered technology transfer of wing leading edge track ribs, and wing leading edge and trailing edge packages.
3. Adelaide's research is at the leading edge of knowledge, with research earnings consistently the highest per capita of any university in Australia.
4. Microsoft's Windows Phone platform is widely recognised by industry experts as a leading edge technology but has not yet gained success among consumers.
5. Investigations showed the tragedy was caused by a breach in the thermal protection system on the leading edge of the shuttle's left wing.
6. " The house we saw today will be a leading edge commodity product in the US, " said CMI Real Estate & Marketing CEO Neil Eisner from Florida.
7. Some of the most attractive sectors are the rapidly modernizing healthcare and environment sectors, in which German companies have a leading edge that can boost the restructuring.
8. The Bombardier had a hole in its rudder and a dent on the leading edge of the tail.
noun
1. forward edge of an airfoil