This paper introduces a basic principle and calculation formula of measuring the horizontal distance and elevation difference by centralhair stadia, and analyzes its measuring precision.
介绍了中丝视距法测量水平距离和高差的基本原理及计算公式，并对其测量精度进行了分析。
2
In the 1990s, many American economists were pulling out their hair trying to get Japanese central bankers to understand what they needed to do.
在二十世纪九十年代，很多美国的经济学家绞尽脑汁去尝试让日本央行的银行家们明白他们应该怎么做。
3
With his spiky hair and ripped T-shirt, Hamilton could be a rugged glaciologist straight from central casting.