这就是为什么一个内置式的吸尘器会对马和刷马者都更加健康，因为这根排气管会连接到室外。

That's why a built-in model is much healthier for both the horse and the groom. The exhaust is vented to the outside of the building.

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一种内置式磁力换向自动往复汽缸，包括汽缸体（3）、活塞（5）、进气管（1）、和排气管（2）；

The utility model relates to a built-in type magnetic reversing automatic reciprocating cylinder which comprises a cylinder body (3), a piston (5), an air inlet pipe (1) and an exhaust pipe (2);

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