Imaging objects are spatially encoded by gradient magnetic fields in magnetic resonance imaging systems.
在磁共振成像系统中，梯度磁场用来对成像物体进行空间编码。
Experimental results indicate that the employment of high gradient magnetic fields is an efficient new way of capturing inhalable particles originated form the combustion of coal.
试验表明，高梯度磁场捕集燃煤可吸入颗粒物是一种新型有效的方法。
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