April 21st: National weather forecast for the next three days
Large-scale precipitation in central and eastern China
An important weather
1. There will be a large range of precipitation in the central and eastern parts of China.
From 23 to 24, there will be a precipitation in the central and eastern parts of the Yangtze River from the west to the east. There will be significant precipitation in the middle and lower reaches of the Yangtze River. Some of these areas are accompanied by strong convective weather such as short-term heavy rainfall, thunderstorms or hail.
2, cold air will affect the Northwest and other places
On the night of the 21st, there will be a strong cold air entering the northern part of Xinjiang. From 21 to 24, cold air will affect Xinjiang, the central and eastern parts of the northwestern region, and most of Inner Mongolia. The winds will be cool and dusty. It drops 4~8°C, and the local area can reach 10~12°C.
3. There is precipitation in the north
From 21 to 24, there will be two precipitation events in the spring sowing area in the northeast. From 21 to 22, there was light rain in the central and eastern part of the Northeast, moderate rain in the eastern part, and heavy rain in the local area. On the 23rd to the 24th, a rain will be ushered in the western part of the Northeast. From 23 to 24, some areas of North China and Huanghuai winter wheat areas have intermittent rainfall;
Second, the specific forecast for the next three days
From 08:00 to 22:00 on the 21st, there were small to moderate rains or showers in northern Xinjiang, eastern Tibet, eastern Inner Mongolia, northeastern China, eastern North China, eastern Huanghuai, eastern Jianghuai, eastern Jiangnan, southern South China and most of Yunnan. There are heavy rains in Hainan, Taiwan, eastern Shandong Peninsula, southeastern Liaoning, etc., and heavy rains (50-80 mm) in parts of southern Hainan and southern Taiwan; some parts of southwestern Yunnan and Hainan will have short-term Heavy precipitation weather. There are 4 to 6 winds in the northern part of Xinjiang, the central and eastern Inner Mongolia, the northeastern part, and the Shandong peninsula. The wind power in the mountainous area of ​​Xinjiang can reach 8; the north part of the Yellow Sea and the northeastern part of the East China Sea will have 7 to 8 winds and 9 winds. 
From 08:00 to 23:00 on the 22nd, there were small to moderate rains (snow) in northern Xinjiang, eastern Tibet, southern Qinghai, most of southwestern China, northwestern Shanxi, northeastern central and eastern parts, western Hunan, most of southern China, and Taiwan. Or showers, in which there is heavy rain (25-40 mm) in the north-central part of Hainan and northeastern Jilin, and there will be strong convective weather in the southern part of Yunnan and southern Hainan. There are 4 to 6 winds in northern Xinjiang, Inner Mongolia, and western Gansu, and 8 to 9 in Xinjiang Shankou and Bailifeng districts; in southern Xinjiang Basin, western Inner Mongolia, and western Gansu, there are sand or floating dust; eastern sea area There are 5 to 7 winds. 
From 08:00 on the 23rd to 08:00 on the 24th, there were small to moderate rains (snow) or showers in the eastern part of the Qinghai-Tibet Plateau, the eastern part of the northwestern part of the country, the eastern part of Inner Mongolia, the western and northern parts of the northeastern part of the country, the northern and eastern parts of the southwestern part, and the northern part of China to the south of China. Among them, there are heavy rains in central and southern Shaanxi, northern Chongqing, Jianghan, northern Hunan, northwestern Jiangxi, northwestern Guangdong, etc., with heavy rain (50-60) mm in the local area; southwestern Chongqing, central and northern Guizhou, western Hunan, and eastern Guangdong The ground will have strong convective weather. There are 5 to 6 winds in the northern part of Xinjiang, Inner Mongolia, the central and eastern parts of the northwestern region, Inner Mongolia, and the northeastern region; some areas of Xinjiang's southern Xinjiang basin, central and western Inner Mongolia, and western Gansu have sand or floating dust, and some areas have sandstorms; 
A pipette, also known as a pipette gun, is a device used to quantitatively transfer liquids. When conducting research in analytical testing, a small or trace amount of liquid is generally removed with a pipette. Pipettes can be divided into gas piston pipettes (Air-displacement pipette) and external piston pipettes (Positive-displacement pipette) according to the principle. Gas piston pipettes are mainly used for standard pipetting, and external piston pipettes are mainly used to handle special liquids such as volatile, corrosive and viscous. Many people ignore the correct use of pipettes and some of the details.
12 channel pipette,8 channel pipettes,8 channel pipette 1000ul
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyuemedicals.com