Standard data chain and CRC-16 checkmode are used in inquiry control by the central station at the drilling company.
数据网由中心站（钻井公司）采用轮询方式控制，使用标准的数据链路控制规程，和CRC-16校验方式。
2
In order to offset the disadvantages of present checkmode, a kind of check system with low cost and high efficiency is introduced in the paper.
针对现有稽查方式的不足提出了一种低费用、高效率的稽查系统方案。
3
The quality checkmode of No. 4 billet caster has been introduced, and the innovative approaches for problems existing in the check have been put forward.