但是，如果设备口、加强垫及主梁相互防碍，在事先得到买方批准后可变更其尺寸。
However, if nozzles, reinforcement pads, and main seams should interfere with each other, these dimensions may be changed upon Purchaser's approval.
纵向及环形焊缝应尽可能不防碍设备口、加强板、支承垫等。
Longitudinal and circumferential welded seams shall not interfere with nozzle openings, reinforcement plates and saddle pads, as far as possible.
清洗进样口，如有必要，更换密封垫，衬管，隔垫。
Clean the injector port, replace critical injection port seals, replace injection port liners, and change septa as needed.
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