A radian is the angle subtended by an arc of a circle whose length is just equal to the radius. 一弧度就是长度刚好等于半径的一段圆弧所对的圆心角。
Western Mediterranean annual having deep purple-red flowers subtended by 3 large cordate bracts. 西地中海一年生的植物,有深紫红色的花,被三个大的心脏形的苞叶包在叶腋内。
Study on Fire Safety Countermeasure in Single Highway Tunnel for Subtended Traffic 单洞对向交通公路隧道火灾安全对策研究
A small or secondary spike, characteristic of grasses and sedges, having a varying number of reduced flowers each subtended by one or two scalelike bracts. 小穗,小穗状花序:禾草或蓑衣草所特有的一种小的或次级的穗,具有数目不等的由一至二片鳞状苞片衬托的渐少的小花。
The results of analysis and field test show that the subtended angle has greater influence on friction loss than length does; 分析和实测结果表明:包角比弧长对摩擦损失的影响要大;当测试样本具有多样性时方可采用最小二乘法确定摩擦系数;
Evaluation of myocardial viability in regions subtended by occluded coronary arteries 闭塞冠状动脉供血区域心肌存活性的评价
With the fast development of the highway, the second-class highway has also got substantial progress, and the extra long single-tunnel for subtended traffic has also increased gradually. 在高速公路飞快发展的同时,二级公路也取得了较大的发展,单洞对向交通的长大隧道日益增多。
Once a fire happened in the Single-tunnel for subtended traffic, it will bring about gigantic economic losses and grave social influence, and study on fire safety countermeasure in single-tunnel for subtended traffic at home and abroad is still in the junior stage. 火灾一旦发生,将造成巨大的经济损失和严重的社会影响,国内外长大公路隧道单洞对向交通火灾安全研究还处于初级阶段。
The characteristic of single-tunnel for subtended traffic is small traffic, low-speed, big fire hidden trouble, higher difficulty evacuating and succoring. 单洞对向交通隧道的特点是交通量较小,行车速度慢,火灾隐患大,火灾疏散、救援难度高。