尽管原油是汽油的主要成分，而在谷类食品，脆薄饼和饼干的生产过程中，只需要使用非常少量的谷物，小麦和其他原材料，限制了制造商对价格的控制。
Though crude oil is the main ingredient of gasoline, processed foods like cereal, crackers or cookies use only a small amount of corn, wheat and other grains, limiting manufacturers' pricing power.
基于多镜理论提出了一种新的多腔滤波器群延迟计算方法，简化了计算过程，使得计算不再受实际材料的限制。
A novel method for calculating group delay of multi-cavities filters based on multi-mirror theory is presented, which simplifies the calculation and is not restricted by the practicable materials.
基于多镜理论提出了一种新的多腔滤波器群延迟计算方法，简化了计算过程，使得计算不再受实际材料的限制。
A novel method for calculating group delay of multi-cavities filters based on multi-mirror theory is presented, which simplifies the calculation and.
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