名词中文翻译
中文翻译：分级辊
同义词：
['grade roller', 'grader']
例句：
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1. The grader is used to grade the soil for fertilizer application.
分级机用于土壤施肥前的分级。
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2. The grader has a smooth surface and can be easily cleaned.
分级机表面光滑，易于清洁。
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3. The grader is essential for accurate soil analysis.
分级机对于准确的土壤分析至关重要。