HHP is a popular online abbreviation for "haha point".

HHP是网络流行用语，表示“笑点”的意思。

Periodic or taskspecific lone workers in HHP area, contact after the task is finished and/or once every 2 hours.

在高危害工艺区域暂时或因某项工作需要而单独工作的人员， 在工作结束后或每两小时联系一次。

This paper introduced the properties of polypropylene speciality HHP1 used for washing machine and analyzed the differences in properties of HHP 1 and general purpose PP resin.

分析了聚丙烯洗衣机内桶专用料HHP1 的性能及其与通用料的区别；