一个半圆形的大理石壁炉燃烧着一小盆没有火焰的通红的炉火，炉边放着一只用手工涂着绘画的煤斗。
An arched marble fire place held its little basket of red flameless heat, and a hand painted coal-scuttle stood on the hearth.
一个半圆形的大理石壁炉燃烧着一小盆没有火焰的通红的炉火，炉边放着一只用手工涂着绘画的煤斗。
An arched marble fireplace held its little basket of red flameless heat, and hand-painted coal-scuttle stood on the hearth.
由于燃烧室外表面的母线轮廓复杂，手工编制数控加工程序难度大。
Because most firebox generatrix is composed of complex curves, it is very difficult to get CNC cutting program with manual means.
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