funerary objects

Discussion on roof characteristic form in constructive burial objects of Han dynasty;

对汉代建筑明器中屋顶特征形式的初探

Its main connotation includes that apply lighting appliances with high efficieney and energy saving,for example, LED,to replace traditional ones with low efficiency,adopt scientific lighting design and control method to improve p.

其主要内涵是采用高效节能照明器具如LED替代传统低效的照明器具,采用科学的照明设计和控制方法,提高照明用电效率和照明质量。

The algorithm for the emissive power of the laser illuminator used in the low-light level observing and sighting system is desciled.

叙述用于微光观瞄系统的激光照明器发射功率的计算方法 ,并就其应用问题进行分析。