English Dictionary

smoke-shade

名詞

古語

(archaic) A tint measured from 0 to 10 on a scale for comparing different varieties of coal according to the amount of unburnt carbon in their smoke.

日本語の意味

（古語）煤煙中の未燃焼炭の量に基づき、石炭の種類を評価するために、0から10までの尺度で示される色調・濃淡の等級。

At the weekly inspection, the engineer noted a smoke-shade of 7 for the seam, an archaic rating that reflected a high proportion of unburnt carbon in the smoke.

週次検査で技師はその層の煙度を7と記録したが、これは古風な等級で煙中に未燃焼の炭素が多いことを示していた。

意味（1）

(archaic) A tint measured from 0 to 10 on a scale for comparing different varieties of coal according to the amount of unburnt carbon in their smoke.

smoke-shades （ plural ）