1. In this paper a right formula of laterad stress was derived by the direct method, and at same time a formula of the vertical strain for calculation was also derived.
本文用直接法导出侧向应力的正确公式，同时还导出了竖向应变的计算公式。
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2. In this paper a right formula of laterad stress was derived by the direct method, and at same time a formula of the vertical strain for calculation was also derived.
