法典标准构成许多国家食品法规的基础，并且被世界贸易组织多边协定之一确认为国际基准。
Codex Standards form the basis of food legislation in many countries and are recognized as international benchmarks by one of the multilateral agreements of the World Trade Organization.
利用套管柱上的已知的基准点来确认或对比处理深度所用的井下仪器。
A downhole tool used to confirm or correlate treatment depth using known reference points on the casing string.
确认完成后将基准标记去掉。
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