down the row thinning machine

thinning是什么意思... ... down-the-row thinning 顺行间苗 down-the-row thinning machine 行间间苗机 flower thinning 疏花 ...

... down-stroking press brake 下冲程折弯机 down-the-row thinning machine 顺行间苗机 down-the-row thinnner 顺行间苗机 ...