sharp edgeの例文

• stone tools resembling a knife were characteristics to the end period of the paleolithic period , and they were made by blunting and exfoliating flakes like stone knives (blades ) (i .e . exfoliation was adjusted so that the sharp edge of flake would be partly remained like a knife blade and the rest of the edge would be blunted ), and by forming the flakes into a shape similar to modern knives .
  ナイフ形石器（ナイフがた せっき）とは、後期旧石器時代に特徴的な、石刃（刃器）などの剥片に刃潰し剥離（剥片自身がもつ鋭い側縁の一部をナイフの刃のように残し、ほかの側縁を鈍くつぶす調整剥離）を加え、現在のナイフに似た形に仕上げた石器である。
• the characteristics of kyo-shikki is " honkataji ," the most basic process of manufacturing lacquer craftworks in which thin wood grain is reinforced with hemp attached to it by using lacquer and starch glue , layers of foundation called " jisabiurushi " and " sabiurushi ," which is a kind of paste made from " yamashina jinoko " and " yamashina tonoko " both produced in yamashina ward , kyoto city and mixed together with lacquer , are applied onto the reinforced wood grain , and , after a process called " kukurisabi " in which the corners of the artifact are reinforced for the purpose of strengthening and making the sharp edge sharper , black and red lacquer is applied onto it layer by layer .
  京漆器の特徴は薄手の木地に漆と澱粉糊で麻布を貼って補強し、その上に京都市山科区から産出する「山科地之粉」「山科砥之粉」等を漆で練り合わせてペースト状にした「地錆漆」「錆漆」という下地材を何層にもわたって塗り重ね、さらに器の角の部分をより鋭角を際立たせ、丈夫にするために補強する「くくり錆」という工程をはさみ、黒や赤のうるしを塗り重ねていくという「本堅地」という漆工芸において最も基本的な製作工程にある。