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双向数据绑定（2）；我按照一摸一样的的编码会有下面的报错求解

Uncaught Error: [$injector:modulerr] Failed to instantiate module bookStoreApp due to:

Error: [$injector:modulerr] Failed to instantiate module bookStoreServices due to:

Error: [$injector:nomod] Module 'bookStoreServices' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.

http://errors.angularjs.org/1.4.5/$injector/nomod?p0=bookStoreServices

at REGEX_STRING_REGEXP (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:68:12)

at file:///C:/Users/Administrator/Desktop/angular/js/angular.js:1983:17

at ensure (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:1907:38)

at module (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:1981:14)

at file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4385:22

at forEach (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:336:20)

at loadModules (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4369:5)

at file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4386:40

at forEach (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:336:20)

at loadModules (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4369:5)

http://errors.angularjs.org/1.4.5/$injector/modulerr?p0=bookStoreServices&p…A%2FUsers%2FAdministrator%2FDesktop%2Fangular%2Fjs%2Fangular.js%3A4369%3A5)

at REGEX_STRING_REGEXP (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:68:12)

at file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4408:15

at forEach (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:336:20)

at loadModules (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4369:5)

at file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4386:40

at forEach (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:336:20)

at loadModules (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4369:5)

at createInjector (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:4294:11)

at doBootstrap (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:1655:20)

at bootstrap (file:///C:/Users/Administrator/Desktop/angular/js/angular.js:1676:12)

http://errors.angularjs.org/1.4.5/$injector/modulerr?p0=bookStoreApp&p1=Err…%2FUsers%2FAdministrator%2FDesktop%2Fangular%2Fjs%2Fangular.js%3A1676%3A12)