在常规直接转矩控制系统中，每一采样周期中只施加一个电压空间矢量。
Only one space voltage vector is applied in each sampling period in the implementation of the conventional PMSM DTC system.
用新的采样布局代替常规布局，能以较少的成本获得较多的经济效益，在平度地区以2 439个样品发现了84条有价值的含金构造。
Replacing usual sampling distribution with new one, more economic results can be obtained by less cost, and 84 gold-bearing structures have been found by 2 439 samples in Pingdu area.
与常规的沉降法相比，浮游细菌采样器能直接得到单位体积空气中所含的菌落数，而且不受环境气流的影响。
Compared with the conventional settlement, planktonic bacteria sampler can be directly contained in unit volume of air bacteria counts, and the impact of air from the environment.
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