In the next three days, Sichuan Basin to Huanghuai will have strong precipitation.
It is expected that in the next three days, most of the Sichuan Basin, southeastern Gansu, central and southern Shaanxi, southern North China, north and south of Huanghuai will have heavy rains, and there will be heavy rains in the northeastern part of Sichuan and southwestern Shaanxi. It is necessary to prevent the adverse effects that local heavy rainfall may have.
Yesterday, the national precipitation was relatively scattered. The large-scale heavy rainfall was concentrated in the northeastern part of Sichuan, southwestern Shaanxi, northern Anhui, central Jiangsu and other places. The rainfall level generally reached moderate to heavy rain, local rainstorms and even heavy rains. Among them, the 24-hour rainfall in Zhenba and Henan in Shaanxi reached 63 mm and 79 mm respectively.
The Central Meteorological Observatory predicts that due to the combined effects of weak air-conditioning and southerly warm and humid air currents, from July 7 to 9, most of the Sichuan Basin, southeastern Gansu, south-central Shaanxi, southern China, north and east of Huanghuai, western Yunnan, and southwestern Guangxi There will be heavy rains in other places, and there will be heavy rains in the northeastern part of Sichuan and southwestern Shaanxi.
Among them, there are heavy rains in southeastern part of Gansu, southwestern Shaanxi, most of Sichuan Basin, southeastern part of North China, north of Huanghuai, eastern Jianghuai, western Yunnan, and southwestern Guangxi. Among them, there are local areas in the northwestern Sichuan Basin and southwestern Shaanxi. Heavy rains (100~150 mm); in addition, there are small to moderate rains or thunderstorms in the eastern part of the northwestern region, most of northern China, and central and eastern Inner Mongolia. The above-mentioned local areas will have strong convective weather such as short-term thunderstorms and strong winds. 
Rivets are a permanent mechanical fastener. Before being installed a rivet consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the buck-tail. On installation the rivet is placed in a punched or drilled hole, and the tail is upset, or bucked (i.e., deformed), so that it expands to about 1.5 times the original shaft diameter, holding the rivet in place.
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