Effects of soil moisture on nitrification activities of a Chinese Chao soil and a Japanese Andisol;
不同水分含量对潮土和火山灰土硝化动态的影响
This method was created by the researchers of Iwate University,Japan,in the paddy field reclamation(PFR) on the volcanic ash soil in early 1960s.
介绍日本早在６０年代初期火山灰土壤水田开发实践中由岩手大学的研究者们创造和发展的“破碎碾压工法”的基本原理及其应用，并对最近中国砂质土壤渗透抑制的室内外研究结果进行了简单介绍，目的是为漏水性土壤地区水田开发以及土壤防渗工程措施提供借鉴。
It was adopted wet-guniting acrylate latex mortar technique in construction.
根据大坝首次安全定期检查的意见,300#火山灰混凝土坝面需进行护面处理。
Characteristics or zero point of charge of volcanic ash soils in Changbaishan and Wudalianchi.
A volcano belches smoke and ashes.
火山喷出黑烟和灰土。
portland pozzolan concrete
火山灰硅酸盐水泥混凝土
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。
In terms of industrial type,burnt stone is a burnt clay mixed material of artificial volcanic ash.
工业类型为人工火山灰质烧粘土混合材。
Study on the Design and Construction Technology of Volcanic Ash Cement Concrete Pavement
火山灰水泥混凝土路面设计及施工技术研究
portland-pozzolana cement
火山灰质硅酸盐水泥
ash that was thrown By an erupting volcano.
火山爆发喷到空中的灰
The volcano ejected lava and ashes .
火山喷出熔岩和灰。
The village was overwhelmed by ash from the volcano.
村子被火山灰覆盖。
A volcano emits smoke and ashes.
火山散发着烟和灰。
volcanic ash and lava build the mountains that we call volcanoes.
火山灰和火山岩在喷射口堆积构成了火山。
Dense clouds of ash were generated during the volcanic eruption.
火山爆发时, 产生了浓密的火山灰云。
A volcano that vomited lava and ash.
喷出岩浆和火山灰的火山
Lava and ashes erupted from the volcano
熔岩和火山灰从火山中喷出来。
The volcano erupted lava and ashes
火山喷射出熔岩和火山灰。
an absorbent aluminum silicate clay formed from volcanic ash.
由火山灰形成的一种具有吸收能力的铝硅酸盐粘土。
So the Romans added a mix of 7)volcanic 8)cinders and clay called "Potsularna".
所以罗马人又添加进一种火山灰与黏土的混合物，称为"波修拉那"。