Conclusion: Structural equation model can be used to study occupational stress, the analysis results were more reliable than that of traditional liner model for measurement error was considerated.
结论：结构方程模型用于职业紧张的研究，因考虑了测量误差，较传统线性模型，结果更可靠。
At last, the error analysis for the principle using system-function-error-analysis is presented; and the conclusion that the error of this principle satisfies the system is given.
最后，利用函数系统误差分析方法对对中定位原理的误差进行了分析，并证明此种对中方法完全能满足系统误差的要求。
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