承德避暑山庄文津阁,建于清乾隆三十九年(1774廓的形成和月亮背景的形成这两个方面予以探讨。年),位于澄湖西北山脚下,为皇家藏书处。文津阁主对于月亮轮廓的形成,从光学的角度便可说明,要建筑有:外二层内三层的阁,阁前水池,环池而建的已有诸多论文论述。但是,需要注意的是,为 Chengde Mountain Resort Wenjin Pavilion, built in the Qing Emperor Qianlong thirty-nine years (1774 profile formation and the formation of the moon background to discuss these two aspects.), Located in the foot of the northwestern part of Chenghu, the Royal Collection Office. Wenjin Pavilion Lord For the formation of the moon's outline, from the optical point of view can be explained, to build: outside the second floor of the three-story Pavilion Court before the pool, built around the pool has been discussed in many papers. However, it should be noted that