top-plate angle

According to the practical issues encountered in boiler inspection the stress analysis method is applied in analytic error calculation of small end of conical head with half top angle> 60 °. Analytic checking calculation shows that error is in allowance range.

针对在锅炉检验中常遇到的实际问题，应用应力分析法，对半顶角大于60°锥形封头的小端解析误差进行了计算分析，并经解析式验算，指出其误差在工程允许范围内。

The maximum penetration depth, expension angle and transition behavior of bubbling-jetting of immersion top-blow gas-particle flow in a ladle water model are measured with photography at high speed.

用高速摄影法测定了钢包水模型浸入式顶吹气粉流的最大穿透深度、扩张角及气泡流／射流转变行为。

Research on the composite gas prevention and cure technology in top side angle of the full-mechanized work face

综放工作面上隅角瓦斯综合防治技术的研究

Spherical metal tank is measured by light tangent method, and the uncertainty of measurement results is calculated by analysing the centre distance, horizontal angle and left and right tangent distance to the top etc.

环形金属罐的测量采用光切法，通过分析中心距、水平夹角、左右切点天顶距等参数，计算球形金属罐容量测量结果的不确定度。

Harris went on top in the last lap. Shoot in aperture preferred mode with the lens set to wide angle and choose the smallest aperture.

在大角度镜头的光圈下，进行拍摄，光圈要最小。