倒三角形 meaning in Chinese
del grad
del operator
half-diamond indention
Examples
- Capsule reddish when matured , obtriangular , 5 - lobed , lobes broad at apex , ca . 1 cm wide in the widest place
蒴果熟时带红色，倒三角形， 5浅裂，裂片顶端宽，稍外展，基部稍窄，最宽处约1厘米。 - Again three differences of industrial output value basis are divided the whole nation to 3 kinds of models ( del and drum shape , " ie " shape )
又根据三次产业产值的不同，将全国划分为3种模式(倒三角形、鼓形、 “工”形) 。 - This paper uses for reference with an example of frame - shear wall structure and studies the conceptual design and method for optimizationof structural system . through establishing frame - shear wall structure unisonous differential eguation and finding a result , the side shifting curve , moment and shear force distribution curve are obtained under inverted triangle load action on the frame - shear wall structure . after analyzing and comparing , the range of best rigid characteristics for such structure has be gotten
本文结合框架-剪力墙实例，研讨了结构体系的概念设计和整体优化方法。通过建立框-剪结构协同工作的微分方程及求解，得出框-剪结构在倒三角形荷载作用下的侧移曲线、弯矩、剪力分布曲线，经分析对比，得出框-剪结构最佳刚度特征值区间。