Amber is a good thing to use, but in case you do not have any, a plastic fountain-pen or the handle of a toothbrush will do.
琥珀是一种好的材料,但万一你没有,一根塑料自来水笔或牙刷柄也可以。
Finally, the waste is topped off with plastic caps, deodorised and landscaped, while a crystal-clear fountain at the entrance tinkles with the cleaned-up leachate.
最后,废物被塑料盖封住,除臭并美化,在填埋场入口处有一座清澈的喷泉,里面就是这些清理干净后的浸出液。
The methods of approximate treat and numeric analysis for melt front fountain effect in the flow analysis of plastic injection molding was discussed in this paper.
讨论了塑料注射成型流动过程分析中熔体前沿喷泉效应的近似处理方法和数值分析方法。
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