1. Volta (1745-1829) Italian physicist. In 1800, he made a voltaic pile, and soon after invented the voltaic battery, so that people for the first time to obtain a stable and continuous current. Otto (1832-1891) was a German engineer. The year 1876To make the first four-stroke cycle gas internal combustion engine. Made possible the automobile and, later, the airplane. Daimler (1834-1900) was a German mechanical engineer. In other words, Fuxi invented binary, and Fuxi is Shennong. Legend has it that Shennong tasted all kinds of grass to have five grains, and our country has primitive agriculture. Fuxi has made great progress to our society. The altar of agriculture in Beijing, China, was built to pay homage to Shennong (that is, Fuxi), here to express the admiration of the Chinese people for him. Rope: By 2800 BC, the Chinese had mastered the technique of creating twine. Our people began to useHemp fiber rope.
3, Led Zeppelin; Seismograph; Brosnan paper clip. 1901 Electric typewriter, Electricite device. 1902 air conditioner; Carbon rod of arc lamp; Electrical hearing AIDS; Hair dryer; Spark plug; The speedometer. 1903 Aircraft; "Barbiturates" used as sedatives or sleeping pills; Steel and concrete skyscrapers. 4, quantum mechanics: In 1900, Planck proposed quantum theory, put forward the new idea that energy is not infinite divisible, and the change of energy is discontinuous. In the late 1920s, quantum mechanics was establishedIt reveals the basic laws of the microscopic material world, provides an important theoretical basis for the development of atomic physics and solid state physics, and is one of the most productive scientific theories of the 20th century.
5, human research results on the molecular structure of DNA, undoubtedly for human research life, treatment of disease has a great role, but also make people face the moral crisis caused by this, such as the development of cloning technology, to human themselves a problem. Invented in 1954 by American physician Gregory Pincus, the pill is a mixture of two hormones that suppress ovulation in womenThe emphasis is on performance. I always feel that as a vacuum cleaner, the most important thing is suction. Stone wireless handheld vacuum cleaner H7 is equipped with a DC brushless motor rated at high aluminum up to 480W, and with the industry's advanced FOC algorithm, the suction power is upgraded to 160AW, which is even stronger than some similar products with 4,000 prices.
2, first of all, let's take a look at the stone cordon vacuum cleaner H7, it is proud of 160AW strong suction, rich accessories to meet a variety of cleaning needs, up to 90 minutes of battery life to make cleaning more lasting. Its design is not only realIt works, and it's beautiful. It's the new cleaning darling. Looking for the V12 Slim, it won the favor of consumers with its five-fold filtration system, lightweight 120AW suction and long battery life. High appearance level and practicality coexist, cost-effective choice, deserved.
3, the stone H7 body side design has a lock button, with the use of the machine can effortlessly maintain the working state, the machine does not need to continue to press the button, more easy and convenient. The dust bucket volume has also been upgraded, and the stone H7 uses a 500ml dust bucket, which is more friendly to lazy users. If you want to completely solve the dust problem when cleaning the dust bucketYou can choose to purchase a disposable dust bag to upgrade the cyclone components.
4, H6 handheld vacuum cleaner has 150AW real dynamic suction (static suction 25000Pa), performance between Dyson V11 and V10, its cyclone structure brought 997% filtration capacity, plus more stable lithium polymer battery, it has also become Germany Rhine suction lossless certification products, This means that not only will it not release secondary pollution when working, but there will be no change in suction after long-term use.
5, unlimited posture, more convenient to face the increasingly refined cleaning of Chinese familiesDemand, stone wireless handheld vacuum cleaner H7 is equipped with a variety of brush head Stone handheld wireless vacuum cleaner H7 is equipped with gap brush, brush, floor brush, bed brush, carpet brush, as well as extension rod and hose, comprehensive coverage of indoor cleaning scenes, can also be used for cleaning inside the car.
6, Pursunick vacuum cleaner suction drag integrated design, equipped with BLDCM digital brushless motor, the maximum speed of 110,000 RPM, motor power of 260W, four levels of suction can be adjusted. The main machine adopts cyclone body encircling design, and the current drives the air to generate centrifugal force for better cleaning.
Wash the surface of the egg white with water. Then use scissors stick iron plate can also be charged with wireless The sharp end, in the big end of the egg prick a small hole, so that the egg will not break when steamed out, resulting in egg liquid flow Stick iron plate can also be charged with wireless . Add a little water to the egg steamer. The more water the eggs will get older. Put the egg in the steamer with the head (that is, the one with the puncture hole up). Steam like thisThe eggs come out unbroken, delicious.
Gouging method This is one of the most common ways we use to separate the yolk and the egg white, the egg stands up, and the bottom gouges a small hole (not too large, otherwise the yolk will also flow out, don't forget to put a bowl or other utensils under the egg). Then slowly shake the egg, and the white will all run into the bowl. This method is relatively simple and feasible, and without the help of other tools, relatively simple.
First, you can put a boiled egg into a plastic lunch box filled with one-third of the water, shake the lunch box for ten seconds, so that the egg shell will become easy to peel. Second, try the steamed egg recipeDharma. After cleaning the skin of the egg, heat it on a steamer steamer. Let the steamer steam for about 5 minutes. This way the steamed egg can be easily peeled off the shell and egg membrane after cooling. Finally, boil the eggs in lightly salted water.