火之口の英語

また、新燃岳噴火降灰を骨材を兼ねた発色顔料として、山之口粘土と混合させ火山灰の組成を焼成雰囲気、酸化炎と還元炎によって赤色系と黒色系の概ね二色の色彩の異なる建築材、煉瓦、瓦、ブロック及びタイルを得る。例文帳に追加

Further, building materials, bricks, roof tiles, blocks, and tiles having approximately two colors of red color and black color are obtained by firing a composition of volcanic ash, prepared by mixing the SHINMOEDAKE eruption fallen ash saving as an aggregate and a color developing pigment and YAMANOKUCHI clay, in firing atmospheres (oxidation flame and reducing flame). - 特許庁