科研之友
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摘要
The computer control system of varying speed grinding is designed;the harmonic distribution and amplitude are controlled in bearing grinding. In comparision with the constant speed grinding, the varying speed grinding can improve harmonic distribution and amplitude, and roundness error can be reduced in some variable speed range, when grinding raceway of ball bearing in 3MZ1310 grinder. HZ]Conclusion: Conclusion: The improvement of the pull through sphincter preserving procedure improves the postoperative continence of bowel significantly, insures the radical resection of tumor, and elevate the safety of operation Key word: Pull through; Coloanal anastomosis; Sphincter preserving procedure; Improvement
