There is still not the engineering technique norm when stone material plane set up in engineering goes beyond the standard, which brings very difficulty to construction work.

然而，当在工程中所用的石材超出规范要求，就没有工程技术规范可循，这给施工工作带来很大的困难。

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How to work out the experimental norm under this new inter national standard are discussed in this paper with the principle of chain transmission and statistical theory.

本文依据链传动基本原理，就如何依据新的国际标准制订试验规范进行了探讨。

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