The engine is a double-acting noncondensing one that exhausts directly into the air with the familiar puff-pup of a donkey engine or steam shovel.
有头有这个资料,所以现在有空,就上来表布出来。制作这个蒸汽发动机当然离开各种车床设备了。
The engine is a double-acting noncondensing one that exhausts directly into the air with the familiar puff-pup of a donkey engine or steam shovel.
有头有这个资料,所以现在有空,就上来表布出来。制作这个蒸汽发动机当然离开各种车床设备了。
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