When done accurately this method of processing guitar tops yields wood that displays the medullary rays that run at a right angle to the growth of the grain.
当如此精确的加工吉他面板时，其髓射线和生长纹理线是垂直的。
Melanin protects from ultraviolet rays so victims run a much higher risk of skin cancer.
黑色素可防止紫外线伤害，所以白癜风患者发生皮肤癌的危险较高。
Melanin protects from ultraviolet rays so victims run a much higher risk of skin cancer.
黑色素可防止紫外线伤害，所以白癜风患者发生皮肤癌的危险较高。
应用推荐