当各规划小区话务量分布不均匀和蜂窝小区结构不规则时，这种传统方法受到诸多限制。
The traditional methods are usually subject to various kinds of constraints, because the traffic density is not well distributed and microcell structure quite irregular.
已有弯曲旋转超声电机，定转子处于单个小区域接触状态，限制了电机的性能输出。
The stator of existent BRUSM is in contact with rotor in one tiny area, and this caused the restriction on the out put performances of motor.
因小区条件限制了无蜜腺抗性的表达，无蜜腺小区未表现出明显差异。
Possibly owing to the narrow condition of plot, the cotton lines without (outside flower) nectary glands did not show resistance.
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