Nowadays, most families like to lay the bed in the middle of the room in the manner of Westerners. Only the head of the bed is against the wall, and you can go to bed on three sides. This way of swinging the bed, besides being convenient for getting on and off the bed, basically has no benefit. Because: When two adults sleep on a 1.5-meter wide bed, they will appear very nervous, unable to relax, and will be shocked to fall off the bed. If you put a baby up, it will inevitably fall under the bed. And adults do not fall out of bed because of "control". But to control, there must be a part of the nerves that can't get rest, and you have to "watch" you all night long. This will greatly reduce your sleep and you will not get a complete and relaxed rest. Relatively speaking, the Chinese in history have summed up a very scientific way of life. For example, the ancient big bed in China is a very scientific product. Such beds are collectively called canopy beds. It can be divided into "four-poster bed" and "six-poster bed". There are many other variations, such as Yuedong door cover canopy bed. It has a 40 cm high fence on three sides, and a 40 cm wide fence on both sides of the bed opening, leaving only about 1.2 meters of door openings to fall on the bed. It has several benefits: First, with the surrounding fence, sleeping more relaxed. There is absolutely no worry about falling off the bed; Second, the fences on the left and right sides of the bed are also very well designed, so that people who sleep near the bed can rely on their first feet, and their waist will not feel empty, so there is no worry about falling. . You can sleep very relaxed; Third, the canopy bed reduces the space for your sleep. If you add a fence, it will look like a hut. It ’s definitely a collection of Tibetan winds! It ’s amazing! The most important thing is to be reliable.
When there is liquid in the Pipette tip, do not place the pipette horizontally or upside down, so as to prevent the liquid from flowing back and corroding the piston spring.In the process of biological experiments, especially in the field of Cell Culture, the pipette is an indispensable laboratory instrument, and the pipette holder is also used very frequently on the laboratory ultra-clean bench or in the biological safety cabinet. The ease of use of the pipette and the pipette holder also affects the ease of experimental operation.
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