Due to Huang Xi's half-empty hole, Dianchi must have water. From all kinds of land surface design
In the comparative analysis of the calculation, the long mud mud is the best, and its advantages are many.
First, the dispersion of loach.
In the past, people were accustomed to raising turtles under water. The disadvantages of these methods are twofold: First, they are forced to erupt into water.
Breathing on the face consumes a lot of physical strength, and it also violates the choice of body length for the body of water.
Shallow and land-seas habits. Second, it is easy to cause pools of yellow lumps to gather at the pool corners.
Scattered, frequent activities. When the temperature is 26°C, it takes only 24 hours to accumulate the yellow cockroaches and the temperature in the cockroach can rise.
Above 33°C, extreme hypoxia.
Loach can play a role in dispersing the jaundice, and better solve the above drawbacks: First, the mud can carry
The surface area of ​​body inhabitation increased by 1.5 times, which correspondingly reduced the density of the cavernous area in Huanghua and reduced the density
Degree adjustment pressure. The second is that the vegetation on the loach can keep the carrier at normal temperature.
Assured, it not only has comfortable breathing support, but also prevents crowded fever and physical exhaustion.
The production. The third is that the loach has promoted the benign dispersal of the yellow peony, on the one hand it can greatly reduce the incidence of disease.
The disease rate; on the other hand, once a disease is found in a certain area, the mud can be used to infect the sewers
Isolate.
Second, the role of muddy oxygen.
Since most of the Huanghua caves are evenly distributed in the loach above the water surface, the Huangjing Cave in the cave
Frequent expansion and contraction activities between air and water often play a role in oxygenation of the carrier. According to the right
The comparison between Dianchi Lake and Wudi Pond indicated that the oxygen content of the caves in Dianchi Lake was higher than that of the unblemished underwater cave.
3 mg/l or more.
Third, the muddy water can make "Living" in Dianchi Lake.
There is often a dead end in the non-dip pool, so that the new water does not come down, the old water can't go out, moss, mucus,
Residual food and other impurities are seriously polluted. Use muddy stacking to make mistakes
With a well-arranged layout, a series of “Sâ€-shaped long channels are connected in series to allow new water to be exchanged
From the water to the drain, it flows through the entire pool to achieve the purpose of “living†water, and it is good for cleaning and oxygen supply.
Good balance.
At the same time, mud loach also provides facilities for scientific feeding. Through domestication. Every day in various muddy
On the fixed point, feeding regularly, the jaundice will produce conditioned reflexes: advance out of the hole, get together and wait for food; eat
Quick, eat full. In addition, planting aquatic plants on loach can also contribute to decontamination and oxygenation.
Insulation effect.
Roundness Measuring Instruments
Roundness meter is a length measuring tool for measuring roundness using the rotary axis method. The roundness meter is a measuring tool for measuring the roundness error of the workpiece using the rotary axis method. Roundness tester is divided into two types: sensor rotary type and workbench rotary type. During measurement, the measured part is installed concentrically with the precision shaft system, and the precision shaft is attached with an inductive length sensor or a workbench for precise circular motion. It is composed of sensor, amplifier, filter and output device of the instrument. If the instrument is equipped with a computer, the computer is also included in the system.
The principle of the roundness meter is the same as that of the coordinate measuring machine. In fact, its working principle is very simple. The coordinate measuring machine is a point acquisition tool. Its principle is to collect points first, and then form a line from points, and then form a three-dimensional model from lines. CMM is a kind of measuring equipment that has a guiding mechanism, a length measuring element, a digital display device in three mutually perpendicular directions, and a worktable that can place the workpiece (not necessarily large or huge). The measuring head can be moved to the measured point easily by manual or motorized means, and the coordinate value of the measured point is displayed by the reading device and the digital display device. Obviously, this is the simplest and most primitive measuring machine. With this measuring machine, the coordinate value of any point in the measured volume can be displayed through the reading device and digital display device.
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