To development project, the key of project management is to how to transfer the intangible technic to substantial product or service.
对于开发项目而言，如何将无形的技术转化为有形的产品或服务是其项目管理的重点。
The service of the self-sealed valve in Urea Plant with ammonia technic was introduced, and the cause of the seal leakage was analyzed, the solution of local maintenance was pointed out.
介绍了自密封阀在氨汽提尿素装置中的应用情况，对其泄漏原因进行了分析；并提出了具体维修方案。
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