VECTOR DOWN
VECTOR DOWN
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That means your normal vector points down .
那意味着法向量指向下。
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The successful construction of pBD-1 gene expression vector laid down the foundation in research of antibacterial activities , and antibacterial mechanism .
本实验猪防御素pBD-1基因表达载体的成功构建,为进一步研究pBD-1基因表达产物的抗菌活性及其抗菌机理打下了基础。
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You can remember , if it helps you , that if a surface is to your right then the normal vector will go down .
你也可以这样记,如果曲面在你的右边,那么法向量就向下。