According to the British "Daily Mail" report, at first glance this may seem like a flower in full bloom in space, but in fact this is the latest equipment that NASA is trying to develop. NASA hopes that this device will work for those There are living distant planets f
The cylinder head is one of the complicated components on the internal combustion engine. The internal cooling water chamber is the passage for the cylinder head to circulate the cooling water, and the structure is complicated. In the casting process of the cylinder head, the inner cavity is in the
How to calculate the dilution factor of pesticides? Generally speaking, according to the volume, it is assumed that there is 1 liter of pesticide, 1 liter of water is diluted by 1 time, and so on. If the concentration (C) and density (P) of the substance before and after dilut
The improvement of the development of the mold industry itself has led to the improvement of the technology of fastener molds. Fastener molds are an important part of industrial products, so the quality of fastener molds is very strict. With the improvement of technology, the need for fastener mold
When the fire siren sounded, we knew that someone was in danger. It was them that they were quickly and fully armed. In the first time, they rushed into the front line to save people. They were the uncles of the firefighters who gave us respect. On the afternoon of March 27th, more than 150 small r
1. The inspection platform generally has high safety requirements. There are many high-altitude service inspection platforms. In order to prevent the risk of the platform steel grating falling, the installation of the steel grating is fixed by welding as much as possible. 2.
Parathion is a colorless and odorless liquid. It is a broad-spectrum insecticide with the functions of contact, stomach poisoning and fumigation. However, if people inhale or ingest, it will cause poisoning and serious death. Recently, researchers from the School of Food Scien
On March 29th, Jincheng Mining Company of Jinjiang Town, Shanggao County, Jiangxi Province experienced large-scale landslides during the operation of hazardous materials, and there were 7 on-site operations personnel. At 20 o'clock on the 30th, six people were killed and one was still missing.
Recently, dermatology clinics have discovered that organic vehicle owners wear masks to protect against wind and cold. However, long-term use of airtight masks allows the respiratory and respiratory droplets to form a hot, humid environment around the mouth, causing dust in the environment. Bacteri
é’ª(Sc) In 1879, Swedish chemistry professors LFNilson (1840~1899) and Clive (PTCeve, 1840~1905) found a new element in rare mineral silicon germanium or black gold ore. They named the element "Scandium" (é’ª), which is the "boron-like" element tha