Gauging the economic impact of the crisis is as difficult as predicting when and where the next cloud of ash will appear.
测量这次危机带来的经济影响如同预测下一次火山灰何时何地出现一样困难。
Experts stressed that the ash, in tiny particles and difficult to detect, was no danger to public health but posed a distinct danger to aircraft.
专家们强调，微小颗粒的灰尘不易察觉，是不会危害公众健康危险，但是极易对飞机构成威胁。
If the image had been taken later in the year, when snow covers the entire peninsula, the ash plume would be difficult to see against a white background.
如果晚些时候拍摄，到积雪覆盖整座火山之后，火山烟流将在白色背景下难以看到。
But she said the ash cloud's movement is difficult to predict.
全是她说，火山灰云的移动是很难预测的。
It is difficult to demolish an ash warehouse due to its complex structure and integral firm structure.
拟拆除的灰库结构复杂，整体结构牢固，爆破难度大。
Decreasing unburned carbon content in fly ash is important to improve the combustion economization of the boiler, but it is difficult to measure online.
降低飞灰含碳量对火力发电厂提高锅炉燃烧经济性具有重要意义，而飞灰含碳量难以在线测量。
With the binder, strength and ash fusion point as technically difficult points, a technological process for a new type of formed coal has been developed through study for several years.
以粘结剂、强度、灰熔点等作为技术难点，通过多年的研究开发出新型型煤生产工艺。
The problems that medium coal ash is difficult to control and the quality of raw coal is going poor in the application of Wangfenggang coal Preparation Plant are exposed.
该机在望峰岗选煤厂应用中，暴露出当入选原煤质量变差，中煤灰分控制不住的问题。
Rice husk with ash contents above 20% is difficult to gasify.
水稻20%以上灰分含量的壳很难气化。
The lives of vulnerable gone Ash, difficult to meet. the more difficult to love.
生命脆弱。转眼成灰，相遇不易。相爱更难。
The lives of vulnerable gone Ash, difficult to meet. the more difficult to love.
生命脆弱。转眼成灰，相遇不易。相爱更难。
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