It analyzes in detail the effective protection against the career disbenifit, and points out that welders should strengthen their own protection to avoid physical damage.
着重分析了面对名种职业危害，制订的有效防护措施，指出焊接操作人员应加强自身安全防护，以避免身体的损害。
Physical fault is their own hard drive hardware damage occurred, leading to the hard disk can not function properly, identification or access data.
物理故障是指硬盘自身发生硬件损坏，导致硬盘无法正常运转、识别或存取数据。
Physical fault is their own hard drive hardware damage occurred, leading to the hard disk can not function properly, identification or access data.
物理故障是指硬盘自身发生硬件损坏，导致硬盘无法正常运转、识别或存取数据。
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