…The drilling speed varies greatly depending on the strength of the rock, but for granite, it can be up to several tens of centimeters per minute. A large horizontal drill is called a drifter, a small handheld downward drill is called a plugger or jack hammer, a small one with an air leg is called a leg hammer, and an upward drill with a support leg integrated with the rock drill is called a stopper. In recent years, pluggers and stoppers are rarely used. … *Some of the terminology that mentions "plugger" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…さく孔速度は岩石の強度で大きく異なるが,花コウ岩などでは毎分数十cmまでである。大型の水平さく孔用をドリフターdrifter,小型で手持ちの下向きさく孔用をプラッガーpluggerまたはジャックハンマーjack hammer,小型でエアレッグを備えているものをレッグハンマーleg hammer,支持脚が削岩機と一体となっている上向きさく孔用をストーパーstoperと呼ぶ。近年はプラッガーとストーパーはまれにしか使用されない。… ※「plugger」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 |
〘Noun〙① The character "大" (big). Also, s...
…[Hiroji Koyama]. . … *Some of the terminology th...
1749‐? A scholar and civil servant in the late Yi ...
The fee that commercial broadcasters receive from...
…(6)When a curve Γ rolls on a constant curve C wi...
Chemical formula: C 5 H 12 O. There are eight isom...
…In humans, as well as monkeys, the arms function...
The name means "Seven Waterfalls." In P...
… [Death in Living Things] Death is the breakdown...
An old man who appears in Japanese mythology. He ...
…It was established in the early 9th century as a...
...In the past, such individual health checkups w...
…In Europe, this shellfish is highly prized among...
The capital of the voyage of the same name in nort...
...It is used as a cold weather garment for peopl...