Compositionality: Perhaps the longest-standing principle in the design of XQuery is that XQuery should be a functional language incorporating the principle of compositionality.
组合性：也许XQuery设计中最长期有效的原则就是，XQuery应该是一门包含了组合性原则的函数式语言。
The paper introduced the main functional design of a kind of greater tractor towing ultra small-sized sprayer and structure and working principle.
论述了一种大型拖拉机牵引式超低量弥雾机的主要性能设计，并介绍其结构和工作原理。
To introduce a kind of toxic gas detection intelligent instrument based on LONWORKS, including its functional principle, hardware circuit and software design.
介绍了一种基于LONWORKS总线的有毒气体智能仪表的工作原理、硬件电路设计和软件设计。
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