Roughness Profilometer, also known as surface roughness meter, surface smoothness meter, surface roughness tester, roughness measurement meter, roughness tester, and other names. It has the characteristics of high measurement accuracy, wide measurement range, easy operation, portability, and stable operation. It can be widely used for the detection of various metal and non-metal processing surfaces. This instrument is a pocket instrument that integrates sensors and hosts, with handheld characteristics, making it more suitable for use in production sites. The exterior design is sturdy and durable, with significant resistance to electromagnetic interference, in line with current design trends. The application fields of roughness meters include: Profile Projector ,Roughness Profilometer,Roughness Measuring Instrument,Surface Roughness Tester,Roughness Tester,Mitutoyo Roughness Tester Zhejiang dexun instrument technology co., ltd , https://www.dexunmeasuring.com
1. Mechanical processing and manufacturing industry, mainly metal processing and manufacturing. Roughness meters were originally developed to detect the surface roughness of machined parts. Especially, stylus type roughness measuring instruments are more suitable for detecting hard metal surfaces. For example, the automotive parts processing and manufacturing industry, the mechanical parts processing and manufacturing industry, and so on. As long as these processing and manufacturing industries involve the surface quality of workpieces, the detection application of roughness meters is essential.
2. In the non-metallic processing and manufacturing industry, with the progress and development of technology, more and more new materials are applied to processing processes, such as ceramics, plastics, polyethylene, etc. Some bearings are now made of special ceramic materials, and pump valves are made of polyethylene materials. These materials have a hard texture, and some applications can replace metal materials to make workpieces. During production and processing, their surface roughness also needs to be tested.
3. With the continuous strengthening and improvement of the technology and functions of roughness meters, as well as their in-depth promotion and application, more and more industries have been found to require roughness detection. In addition to mechanical processing and manufacturing, roughness evaluation is also required in the production and processing of power, communication, electronics, such as couplings on switches, integrated circuit semiconductors, and even stationery, tableware, and other products used in people's daily lives The surface roughness of human teeth needs to be tested.
Watering of vegetables during seedling
During the vegetable nursery phase, it's essential to monitor soil moisture levels closely. If the soil moisture drops below 16% to 17%, watering should be done immediately to prevent stress on the young plants. Here are some detailed guidelines to ensure proper watering practices.
First, choose the right time for watering. It's best to water during sunny weather, ideally between 10 a.m. and 12 p.m. This allows the water to be absorbed effectively before the heat of the day causes rapid evaporation. Avoid watering in the evening, as this can lead to damp conditions that encourage disease and fungal growth.
Second, control the amount of water carefully. Overwatering can be just as harmful as under-watering. The goal is to moisten the soil around the seedling roots without leaving standing water on the surface. A good rule of thumb is to water until the top 8 to 10 cm of soil is evenly moist. Excessive moisture can cause root rot, weak stems, or even plant diseases, especially in cooler or shaded areas.
Third, use a fragmented watering approach. Seedbeds often have uneven temperature and moisture levels, with the center typically drier and the edges more humid. Therefore, it’s important to water based on the actual needs of different areas. Water only where necessary, ensuring uniform moisture throughout the bed. This helps promote even growth and prevents some seedlings from becoming leggy while others remain stunted.
In addition, consider using a fine mist or drip irrigation system for more precise watering. This method reduces water waste and minimizes the risk of damaging delicate seedlings. Always check the soil before watering—only water when needed, not on a strict schedule. Monitoring the seedlings regularly and adjusting your watering strategy accordingly will help ensure healthy, strong growth.