belt shifter spring 移带器弹簧
belt tightener spring 传动带紧带轮弹簧
fan belt tightener spring 风扇带张紧弹簧
Spring steel belt 弹簧钢带
spring water spill belt 泉水溢出带
Spring City characteristic belt 泉城特色风貌带
the spring water overflowing belt 泉水溢出带
·2,447,543篇论文数据，部分数据来源于NoteExpress
The Cornell team said the risks to monarchs could be heightened because the butterflies migrate northward through the U.S. Corn Belt from their winter homes in Mexico during the spring months, when corn pollen is thickest.
CNN: Researchers find bio-engineered corn harms butterflies
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