返回可识别此线程池的字符串及它的状态，包括运行状态、并行级别、工作线程和任务数量。
Returns a string identifying this pool, as well as its state, including indications of run state, parallelism level, and worker and task counts.
测试不锈钢在弯曲状态下的延展性及可锻性。
Tests used to assess the ductility and malleability of stainless steel subjected to bending.
通过一系列查询功能，可方便的获知每一件固定资产的状态及当前所处位置。
Through a series of inquiries functions can be easily learned and the current state of fixed assets each location.
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