它毫无遮拦的在天空中踯躅，被侵蚀、逐渐灰败、越来越与下面的世界背道而驰，成为一种过时的存在方式的残留。
It wandered through the sky naked, corroded, and gray, more and more alien to the world down here, a hangover from a way of being that was now outdated.
多元灰预测模型呈现出较高的精度以预测硫酸盐侵蚀环境下混凝土的强度劣化规律和服役寿命。
Multivariate grey prediction model shows enough precision to predict the strength development and service life of concrete subjected to sulfate environment.
研究了测定灰岩侵蚀速率的数学模型，并且对一些灰岩表面侵蚀速率作了评价。
Mathematical model of determining erosion rate in limestone is studied and some surface erosion rate of limestone are evaluated.
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