| 1. | The scientists attributed the losses to varied effects of the ash .
科学家们认为，损失是由于火山灰的多种影响造成的。 |
| 2. | Road foundations . testing of reactivity of pozzolana to lime
路基.火山灰的石灰反应试验 |
| 3. | Mounds of pumice and volcanic ash mark its center , where the volcano remains
浮石和火山灰的土墩标志着它的中心，是火山的遗迹。 |
| 4. | Standard specification for fly ash and other pozzolans for use with lime for soil stabilization
土壤稳定性用与石灰掺合用的飞粉和火山灰的标准规范 |
| 5. | Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete
混凝土中使用的煤飞灰和未处理的或煅烧的天然火山灰的标准规范 |
| 6. | Standard test methods for sampling and testing fly ash or natural pozzolans for use in portland - cement concrete
硅酸盐水泥混凝土中使用的飞灰或天然火山灰的取样和试验用标准试验方法 |
| 7. | These flows are an intermediate stage between lava and ash , so they move extremely rapidly ? up to 400 kilometers an hour , some sources say ; cars and even small airplanes would have no chance of outrunning them
这些碎屑流是岩浆与火山灰的中间物质，因此移动极为迅速，有些时速可达到400公里，所以就算是开汽车甚至是搭小型飞机，可能都逃不出它的魔掌。 |
| 8. | Or you may admire the beautiful rings of saturn to see how icy rocks form the ring system ; or venture to jupiter s satellite io to experience a hell of continual volcanic eruptions ; or land on the methane ocean of saturn s satellite titan to feel the environment where life first formed on earth
又可以在星空中细赏土星美丽的光环，了解大大小小的冰块，如何组成一圈圈的光环又或者踏上不断有火山爆发的木卫一艾奥，感受一下四周满布硫磺火山灰的炼狱并且降落土卫六泰坦的甲烷海洋，亲身经历有如地球天地初开时候的环境。 |
