五、苯环亲电取代定位规律 1、定位规律(orientation rule) 定位规律( CH3 + HNO3 H2SO4 CH3 NO2 + CH3 + NO2 NO2 CH3
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This is undesirable because it violates a fundamental rule of object orientation: Objects have behavior and data.
但是，这种方式并不合适，因为这违反了面向对象的基本规则：对象拥有行为和数据。
This rule is especially applicable for enterprises with a large number of applications and legacy systems that need service orientation and integration.
这个规则特别适用于包含大量需要面向服务和进行集成的应用程序和遗留系统的企业。
The evolution rule of the rare earth aluminum capacitor foil preparation process was investigated by means of bit etching, EBSD micro orientation analysis and X-ray method.
采用蚀坑法、EBSD微取向分析和X射线法等手段，对稀土电解电容器用铝箔制备过程中的织构演变规律进行了研究。
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