验证模型如上图。模型显示不可识别，要加入32个限制变量， Notes for Model (Default model) Computation of degrees of freedom (Default model)
Number of distinct sample moments:
377
Number of distinct parameters to be estimated:
138
Degrees of freedom (377 - 138):
239
Result (Default model)
The model is probably unidentified. In order to achieve identifiability, it will probably be necessary to impose 32 additional constraints.
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