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Roughly translated, these are labelled "High Grade", "Special Grade" and "Super Grade" hairy crabs.
大概翻译过来就是“高级”、“特级”和“超级”大闸蟹。
However, a broad spectrum of special designs are available: super-performance units for extra-stubborn bulk solids, eccentric discharges, food grade designs, dual discharge and low-profile.
设计应用广泛：超额外-散装顽固性固体，偏心排放，食品等级的设计，双放电。
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