On the basis of observations investigation is conducted on the decadal characteristics of summer Eurasian blockings and its possible relation to precipitation over China.
利用观测资料对夏季欧亚地区阻塞活动的年代际变化特征及其与我国降水年代际变化的可能联系进行了分析。
2
The blockings of head are always resulted by accumulated wastes in the screen mesh. Scale deposit is inevitable after long term using, some spray bores might be blocked without cleaning up.