19.To xylophyta, can be in analyse of beautiful foot place is crossed, or smash, in order to enlarge bibulous area.
对木本植物,可在花脚部位剖十字,或砸碎,以扩大吸水面积。
20.An experimental study of using the crossed pump-dividing stimulated four-photon mixing (SFPM) to measure the total disparsion of optical fiber is reported.