这些残留必须彻底清除。 先用高压淡水清洗除去螺旋桨表面的灰尘污垢和微量盐分。
The silicone anti foulingpainting system needs high requirements on the surface's cleanliness, So these residue must be cleared.
冲砂后螺旋桨表面会有很多的灰尘和磨料的残留。
There will be a lot of dust and abrasive residueon the surface of the propeller after sand washing.
如果用金属磨料如钢砂冲击铜质螺旋桨会在铜表面上残留，会与铜发生电偶腐蚀。
If such as metal abrasive is used in sand washing, itwill remain on the surface of the copper propeller, then galvanic corrosionwill occur with Cu.
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