But such as is black ash prone, not nice at that time graph, to finally make white is not white, black is not black.
而如是黑色的易发灰，不要当时图漂亮，到最后弄得白的不白、黑的不黑。
Color cement concrete is prone to form white efflorescence on the surface after a period of time, that is because of the salt out phenomenon of cement.
用彩色水泥配置的混凝土在使用一段时间后，其表面会产生白霜，即产生水泥的盐析。
Color cement concrete is prone to form white efflorescence on the surface after a period of time, that is because of the salt out phenomenon of cement.
用彩色水泥配置的混凝土在使用一段时间后，其表面会产生白霜，即产生水泥的盐析。
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