The practical application shows that the system is safe and reliable, and has high illumination intensity and long service-life. The system has been applied for the patent of invention.
经实际应用表明该灯具照度高、寿命长、安全可靠，并已申请了发明专利。
The practical application shows that the system is safe and reliable, and has high illumination intensity and long service-life. The system has been applied for the patent of invention.
经实际应用表明该灯具照度高、寿命长、安全可靠，并已申请了发明专利。
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