The eye vector can be created in global coordinates by subtracting a surface position from the eye position and transforming the resulting vector into tangent space.
视向量能够在全局坐标系中通过视点坐标减去表面坐标来创建，并且要把结果转换到切线空间中。
With the transforming of resource and the tension between the energy supply and demand made the technology on surface compression becoming the important subjects for us.
资源的转变以及供需矛盾的紧张，使得人工林杨木表面强化技术成为重要的研究课题。
But the bacteria fight back by transforming the ions into metallic gold nanoparticles that later coalesce into lace-like crystals across the surface.
但是，这种细菌会发起反击，把金离子转化成金的纳米级粒子，这些粒子后来会在表面上接合成为花边状晶体。
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