用back fall造句子，“back fall”造句

2、The earthquake often happens after the anomaly is over or during the back fall of the anomaly high value.

1、Distribution of back fall liquid film of vertical water jet of a sort of nozzle is studied.

3、If slip a phenomena behind, car tail should toward one side in the back fall or safety, and turn on headlight and XXX lamp, spark the note of front and back rolling stock.

4、How low will the greenback fall?