Based on former research, the paper researches the inventory strategy of multi-item service parts based on different conditions.
本文在前人研究的基础上，针对服务备件的特点，探讨了多种条件下的多品种服务备件库存控制问题。
Based on former research, author investigates the interactions between pipelines and soils around by laboratory test and FEM. 1. Laboratory model test for pipelines buried in sandy soils.
总结前人研究成果的基础上，基于模型试验和有限元分析方法，进行了掩埋管线的管土相互作用研究：1。掩埋于砂土中管线的室内模型试验研究。
Based on former research relating to Customer Value, this article first proposes three new concepts, i. e. Customer Expecting Value (CEV), Designed Value (DV), Decisive Customer Value (DCV).
在前人有关顾客价值研究的基础上，本文补充提出顾客期望价值、设计价值和顾客决策价值三个新概念；
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