narrow QRS complex tachycardia 窄QRS综合波心动过速;
Non-metallic Inclusions in Low-C Microalloyed NQT Steel
低碳微合金非调质钢非金属夹杂物的研究
Geological evidence indicates that NQT is also different from South China Block ( SCB), especially in Precambrian tectonic and evolution history.
北秦岭与南秦岭具有明显不同的前寒武纪构造与演化特征。
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