求翻译：应用期间，总结出了该伞钻的操作工艺、维护要点，并指出了液压伞钻存在的不足之处及改进意见。是什么意思？

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Using period, summarized the operation craft, the maintenance main point which this umbrella drilled, and had pointed out the hydraulic pressure umbrella drilled the existence the deficiency and the improvement opinion.

During application, summed up the umbrella drilling operation, maintenance, and pointed out the shortcomings and improvement of hydraulic drill.