规则表达式可以采用各种格式，一项关键的设计决策就是决定哪些规则最适合用哪种形式表达。
As discussed, rule expressions may take on a wide range of forms, and a key design decision is the identification of which rules are best expressed in which form.
LED隧道灯采用新一代高品质大功率白光LED，性能稳定，工程寿命长；特殊设计的防水结构，适合各种环境的气候条件。
Using a new high power white LED with high quality, more stable and longer life; Special design for waterproof , suitable for all kinds of environmental and weather conditions.
在此基础上设计的灌装机采用电气控制回路，因此特别适合在对于有防爆要求的环境中使用。
On this basis the design of the filling machine using electrical control circuit, it is particularly suitable for explosion-proof requirements in the environment.
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