| 摘要 |
<p>The casing (1, 2) has curved side surfaces (11, 15, 21, 23). They curve in towards each other, to meet the rear- and front ends (14, 16). They are made of curved plates welded together, with their free edges designed to make tongued-and grooved joints which contain additional sealing material. Their flanged edges are clamped together to complete the assembly. The door mechanism is further detailed.</p> |
