机器人

Because that's what Stevie Gerrard does.

这是斯蒂文杰拉德的方式。

Different level of occurrence of rice sheath blight were observed by applying different concentration of two chemicals individually and mixedly.

通过单独或混合施用不同浓度的两种药剂，造成水稻纹枯病不同发生程度，继而观察接茬小麦纹枯病病情，结果进一步证明，水稻纹枯病与接茬小麦纹枯病极显著正相关，其后效应明显。