持有、使用、生产、储存、运输和处置核材料的单位，应当依法取得核材料许可证。
That said, it's important to recognize that locking in itself is not bad. It does, in fact, serve an important purpose to ensure that applications properly and orderly consume or produce data. The key challenge is with the original manual implementation of it using APIs like getReader() and releaseLock(). With the arrival of automatic lock and reader management with async iterables, dealing with locks from the users point of view became a lot easier.，详情可参考safew官方版本下载
FT App on Android & iOS，更多细节参见Safew下载
item.published,