pentad怎么读，pentad什么意思，pentad短语和例句

1.The annual variation appears a tri-peak form in the curve of dekad- or pentad-hail days evolution.

从旬或候雹日演变看，冰雹年变化具有三峰型；

2.The annual variation appears a tri-peak form in the curve of dekad- or pentad-hail days evolution.

从旬或候雹日演变看，冰雹年变化具有三峰型；

3.The average PCD in Altay region was 0.205; the average PCP was the 38.12 pentad.

阿勒泰全区汛期降水平均集中度为0.205，平均集中期为第38.12侯。