以撒就在那里筑了一座坛，求告耶和华的名，并且支搭帐棚。他的仆人便在那里挖了一口井。
And he builded an altar there, and called upon the name of the LORD, and pitched his tent there: and there Isaac's servants digged a well.
旋挖钻机履带式行走装置支重轮之间的距离及其数量的多少，尚缺少系统的计算公式。
There are few systematical formulas to calculate the roller number and the distances between rollers in crawler travel system of rotary pile drill.
介绍暗挖隧道曲线导向测量方法——弦线支距法和切弦线支距法的原理及应用。
This paper introduces the theory and its application of the curvilinear guided survey methods in concealed excavation of tunnels, such as chord offset method and tangent offset method.
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