Desks and chairs: the desks and chairs of Chinese students follow the development path of the desks and chairs of western schools.
From the composition of the material and the development history, there is no obvious difference between the two, both experienced the miscellaneous wood manufacturing (the first generation) -- steel and wood in one (second generation) -- hard plastic replacement stage;
From the appearance, the gradual transition from a single shape to the lifting, connecting, and so on more conform to the various forms of ergonomics.
Moreover, with the development of the height and weight of adolescents.
There are desks and chairs standard revision again problems at home and abroad, but there are also different, mainly reflected in the desks and chairs placed problem, relative to domestic universal uniformity, foreign student desks and chairs are flexible.
The three stages of development of Chinese students' desks and chairs.
China's education business has a history of more than 100 years, and the desks and chairs used by students continue to be made of traditional wood and wood.
In the early 80 s after the reform and opening up, a few wood products factory learn foreign experience in big cities, starting use gangmu combination manufacture furniture, then use the same methods produce the second generation of the school with student desks and chairs in our country, to take the place of the wood part.
Steel wood desks and chairs while after 20 years of development, has production by adopting the mechanical method, but as it will loose nails, easy to rust, such as short service life of the various ills, is still not completely replace the first generation of desks and chairs.
In rural schools in most parts of the Midwest, students still mostly use the first generation of desks and chairs made of wood.
And years of use, it also proved the quality of student desks and chairs in steel wood no better than the first generation of wooden desks and chairs in the education sector, so although this time has been more than 20 years, the development speed is very slow, now also can only as a transitional product, replace some wood.
Rapid development in science and technology and the developed countries of high-rise building doors and Windows using the raw materials have come "wood, iron, aluminum alloy" three stages, more than 10 years ago has started all into a period of replace the aluminum alloy with hard plastic.
In recent years, the technology personnel have designed a large number of plastic parts to replace cars, trains, ships, planes of wood, iron, aluminum and other parts, the performance is far better than the former.
It is the inevitable trend of the development of science and technology, and it is the inevitable trend of the development of China's manufacturing industry, and the desks and chairs are no exception.
And, not only can adjust height of desks and chairs in the future, and even the type of desks and chairs, by the adjustable height of the desk, tablet chair and can adjust the distance of connection plate, it solves the existing middle and primary school desks and chairs can't adjust the high table, chair, desk and chair of the distance problem, suitable for different age class, students of all sizes to use, can be adjusted on the individual situation of each student to fully comply with desks and chairs the health standards of the state.
The standards of Chinese students' desks and chairs are subject to revision.
Like our country, with the development and improvement of teenagers' physique, the European and American countries are also facing the problem of revision of the standard of students' desks and chairs.
In Europe, for example, according to the British "daily mail" reported that recently, the researchers measured found that Britain's 1400 primary and middle school students' height and weight, compared with similar data in 1971, the average height is increased by 3 cm, weight increased significantly.
The report said similar cases were reported in other European countries, excluding Britain.
In response to this, the European Union has introduced a new set of guidelines for desks and chairs.
The new standard recommends that schools purchase adjustable desks that provide ample room for students' legs;
Buy a stronger chair to withstand the power of the student sitting.
In addition, the new standard also recommends that schools purchase ergonomic chairs to protect students' back health.
Since the beginning of the semester, the number of headmasters who have asked for more chairs and chairs has jumped tenfold since the beginning of the semester, according to a British furniture supplier.
The new desks and chairs must be tested by model, shape, strength and stability, says leant chalar of the British furniture research association.
"It means that students can be more focused on learning, less distracted and more appropriate," he said.
This is not only good for students, but also improves their learning ability.
According to the report, these newly customized desks and chairs are not only wide and fit, but also more durable, especially in the back of the chair.
The new standards also require schools to fully consider the physical development of their children in customised desks and chairs, and to select desks and chairs that are conducive to the growth of the children's bones.
The height of a new generation of desks and chairs is adjustable, so that students' stretch space is much larger, says leventer charlal.
He also said that he hoped that comfortable desks and chairs would make the children sit comfortably, and that they would be more attentive in class.
It is the first time since the 1970s that Europe has adjusted and standardized the requirements for school desks and chairs.