求翻译：做好机械设备的前期管理，机械从选购开始，就要评审机械的设计是否安全、可靠，安全装置是否完善、可靠，防护标准的高低是什么意思？

Mechanical equipment management of earlier stage, the mechanical starting from the purchase, it is necessary to review the mechanical design is safe, secure, security mechanism is perfect and secure, protection standard of high and low

To do a good job of machinery and equipment, and machinery from early-stage management, it is necessary to begin the jury selection mechanical design is safe and reliable safety devices, whether it is good, reliable, high standard of protection

Completes the mechanical device the earlier period management, the machinery from selects and purchases the start, whether has to appraise the machinery the design security, reliably, the safety device whether consummates, reliably, protection standard height

Mechanical equipment management of earlier stage, the mechanical starting from the purchase, it is necessary to review the mechanical design is safe, secure, security mechanism is perfect and secure, protection standard of high and low

正在翻译，请等待...