分析了闭锁阀在使用过程中出现的问题，阐述了改用智能卡锁控阀的使用方法。
The problems existing in the course of utilization of locked valves are analyzed, and the method for using intelligent card locked valves are described.
另外就天然防腐剂在开发、使用过程中出现的问题作了分析，并就如何合理利用提出了自己的观点。
In addition, problems occurring in the development and use of natural preservatives are analyzed, and some Suggestions on the rational use of them are.
针对油气井井下机械取样器在使用过程中出现的问题，研究开发出了智能型微电子高压物性取样器。
To the problems occurring at using down hole mechanical sample noil and gas Wells, aptitude microelectronic high pressure sample has been studied.
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