The artificial climate box is a sealed box equipped with temperature and humidity and light control, which can simulate the natural climatic environment in nature to meet the needs of plant growth and development. In the artificial climate box, the main source of light for the plants is the artificial light source. Since the natural climate environment in nature is to be simulated, the first principle that the artificial climate light source needs to follow when designing is that the spectrum of the light source is similar to that of the light source. The spectrum of sunlight. Another light source design principle is that the light intensity of the light source is greater than the light saturation point required for the growth and development of the cultivated plants.

The above are the two major principles that the artificial climate box light source design must follow. Let's talk about the reason why the artificial climate box light source design must follow these two principles. We know that in the natural world, the light source for plants is the sun. Plants can only perform photosynthesis when they receive sunlight, while artificial climate chambers are used indoors and need to meet precise control requirements. Therefore, sunlight is used. It is not shown to carry out research. At this time, only artificial light sources can be used. To ensure the fairness and authenticity of the research results, the closer the light source is to the natural light source, the more reasonable and effective the test results will be. Therefore, the artificial climate The first principle of box light source design is that the spectrum of the light source is analogous to the spectrum of sunlight.
Secondly, the light required for the growth and development of cultivated plants generally has a saturation point. If the light regulation range in the artificial climate box is not wide enough, then for some plant cultures with relatively high light requirements, it may not be normal. The development of artificial climate chambers will also reduce the scope of use of artificial climate chambers. Therefore, in the design of artificial climate chamber light sources, it is necessary to ensure that the light intensity of the light source is greater than the light saturation point required for the growth and development of the cultivated plants. This is a variety of plant species. Can use artificial climate box to carry out research work.

The Rock Drill works according to the principle of impact crushing.When working, the piston makes high frequency reciprocating motion, continuously impinge the drill bit tail.Under the action of impact force, the rock is crushed and cut into a certain depth by a wedge shaped drill head, forming a concave mark.When the piston returns, the solder rotates at a certain Angle, and the piston moves forward.The fan shaped block between the two notches is sheared by the horizontal force produced by the drill head.The piston continuously impinges on the end of the drill and continuously inputs compressed air or pressure water from the core hole of the drill to discharge the rock slag out of the hole, which is to form a circular hole with a certain depth

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