It was different for distribution freguency of the genotypes beteen IPF subjects and healthy subjects(X2=14.288, P<0.05), demonstrating that the comprison of them was sense.2.
肺纤维化组和健康对照组ACE基因型分布频率比较,X2 =14.288,P<0.05,有显著差别,说明这两组基因型分布频率明显不同,有比较意义。
参考来源 - 血管紧张素转化酶基因多态性与特发性肺纤维化的相关性·2,447,543篇论文数据，部分数据来源于NoteExpress
The steel sample is molten by radio freguency induction heating in pure nitrogen flow.
试样在高纯氮气流中用高频感应加热熔融。
We have discovered that the signal freguency receivered driffes off and small in making up the receiver of 882F freguency modulation.
在882F调频接收机组装过程中发现，调频接收频率偏小。
Treating a bowl of centrifuge as a clamped-free thin-walled cylinder, fromulas to calculate natural freguency are given by using Rayleigh's energy method.
本文将离心机转鼓视为一端固支、一端自由的薄壁圆筒，用瑞利能量法推导其最低阶固有频率，所得结果具有工程运算所需精度。
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