trough line

The axes of low-layer helicity plus center is concurrent with shear line and the convergence line of surface inversion trough.

低层螺旋度大值中心轴线与切变线和地面倒槽辐合线走向一致，高层螺旋度与高空急流有关。

Send the control cable in the nearside control line trough.

将控制电缆送进左侧控制线槽.

General model for trough line and its analysis

矩框槽形线的统一模型及其分析

THE CALCULATION OF THE OPTICAL ENERGY DISTRIBUTION ON AN ABSORPTIVE SURFACE OF THE COLLECTOR PIPE FOR TWO TYPES OF THE LINE CONCETRATION COLLECTOR Study on solar irradiance received by the trough-focus-tracking solar collector

两种线聚焦集热器集热管吸收表面上光能密度分布的计算组合跟踪的槽式聚焦集热器太阳辐照量的研究

The design and construction of ground anchored trough type long-line dado

先张法预制梁地锚槽式长线台座设计与施工

Results show, it is the principle influencing systems that the upper trough, surface convergence line, The low level southwest jet and shear line.

分析结果表明，高空南支槽、地面辐合线、850hPa西南急流和切变线，是这次强对流天气过程的主要影响系统；