The 5 body measurements and weight of 815 Qinchuan cows at five different age phases are studied by principal component analysis.
对陕西蒲城县和渭南市临渭区5个不同年龄阶段815头秦川母牛的5项体尺和体重性状进行了主成分分析。
CONCLUSION: Multifrequency segmental bioelectrical impedance analysis is reliable in measuring human body component.
结论：应用多频节段生物电阻抗分析法测量人体成分具有较高的可重复性。
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