…Then, in 1949, American JJ Couch invented the steam-powered percussion rock drill. In 1951, American JW Fowle invented a mechanism for rotating the rock drill rod using a ratchet and a pole. In this rock drill, the piston and rod were integrated. … *Some of the terminology that mentions "Fowle, JW" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その後,49年にアメリカのクーチJ.J.Couchによって蒸気動打撃式削岩機が発明された。さらに51年にはアメリカのファウルJ.W.Fowleが,ラチェットとポールによる削岩ロッドの回転機構を発明した。この削岩機では,ピストンとロッドとが一体になっていた。… ※「Fowle,J.W.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
...In the 18th century (link), geography was defi...
This lake is located at the base of the Nemuro Pe...
King of the Persian Empire. Reigned 423-404 BC. So...
Born: July 29, 1898. Limanov [Died] January 11, 19...
A novel by Hayashi Fumiko. It was serialized in s...
A forest protects railways, roads, homes, and vil...
…[Shinichi Suzuki]. … *Some of the terminology th...
…From around the time of World War II, he openly ...
...It is also called quasi-Chinese, Japanese-Chin...
…[Keizo Kamiyoshi]. … *Some of the terminology th...
...The third floor was entirely used for the room...
To depict nature or objects as seen. In Chinese p...
...Winners are selected by secret ballot of Acade...
A general term for physical, chemical, electrical...
...Population: 600,000 (1994). During the Tang Dy...