运动场地的设计，规定，维护和执行应急声音系统用实用规程。
Code of practice for designing, specifying, maintaining and operating emergency sound systems at sports venues.
现行的实用化计算规程对催化转化器流动计算的详细细节都做出了要求。
This procedure makes detail requirements on every step of steady state analysis for catalytic converter gas flow distribution.
分别对温度与氧化电流密度等影响氧化膜生长速度与质量的工艺条件做了分析研究，取得了实用的工艺操作规程。
Effects of technological conditions such as temperature and current density on the growth rate and quality of the anodizing film are analysed, and a practical operating technology is obtained.
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