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。
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。
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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