Combined with practical situation, the model accuracy was verified, further the model calculation can lay solid foundations for online calculation of roll gap.

结合现场实际，验证了模型的准确性，为在线计算出口辊缝提供了思路和依据。

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These techniques successfully cope with the wellbore instability under complex formations, protect hydrocarbon zones, increase ROP, lay solid foundations for rapid and economic drilling operations.

该技术的实施，成功地解决了复杂地层的井壁失稳问题，有效地保护了油气层，提高了钻井速度，为该地区安全、快速及经济钻井奠定了坚实的基础。

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"The government's stimulus measures implemented last year have managed to stabilise growth and lay the foundations for solid expansion this year, " said Dariusz Kowalczyk of Credit Agricole CIB.

BBC: China growth shows signs of pick-up from 13-year low

He contended that stable home prices will, in turn, lessen foreclosure pressures and lay the foundations for a solid economic recovery as American homeowners regain confidence.

FORBES: Market Scan