However, the high ashcontent and logistical problems with collection and processing will limit full utilization of this resource.
但是,灰分含量高和收集加工上的困难制约了对它们的充分利用。
2
The ashcontent of the Pinus tabulaeformis branches is less than 0.52 % in the northwest margin areas.
城区西北边缘的公园区灰分含量最低,其值小于0 .52 % 。
3
This paper introduces the mix proportion of high fly ashcontent concrete instead of 30% cement with fly ash and some experiment results of the test examples in laboratory.