Отв
seasons
There are four different seasons in the year and they all are unique. They please and surprise us with beauty and natural phenomena. All children and adults have their favorite season. Someone likes spring, someone likes summer, someone waits for autumn and winter. Every time of the year, just like a person has his own mood. There are people who love all seasons.
Many people like summer. This is the time of rest and vacations. This season provides an excellent opportunity to go to the sea and sunbathe. In the summer season, many berries, fruits, and vegetables are ripening. Days are getting longer and hotter, the nights are shorter. You have an opportunity to go to the countryside to the lake, have a picnic, take a walk in the wood. But, unfortunately, this time passes very quickly and autumn comes.
Children go to the school. Fall is the golden time, it's time to harvest. Green leaves change its color and please with beautiful contrasts of yellow and orange shades. Birds fly away to the south, animals prepare for the winter season. This time does not last long, comes the turn of heavy rains and cold.
And then winter comes. It pleases us with New Year's holidays and fun. A lot of white, fluffy snow falls. In winter, you can ski, sled, and skate, ride in the mountains, build snowmen. Winter gives us a New Year mood. People begin to prepare for the holiday, decorate the trees, give each other gifts and have fun.
After a cold, frosty winter, spring comes. Everything around comes alive and awakens. The days become longer and warmer. The sun more often makes us happy with its rays. Birds come back and please us with their twitter. The snow melts and the murmurs of streams can be heard. Appears the first grass, flowers. Blossom buds in the trees. Forest animals get out of their holes. May beetles fly in. New life comes, with the arrival of spring.
Поделитесь своими знаниями, ответьте на вопрос:
Переведите правильно, грамотно. gas welding gas welding is a non-pressure process using heat from a gas flame. the flame is applied directly to the metal edges to be joined and simultaneously to a filler metal in the form of wire or rod, called the welding rod, which is melted to the joint. gas welding has the advantage of using equipment that is portable and doesn't require an electric power source. the surface to be welded and the welding rod are coated with flux, a fusible material that shields the material from air, which would resist in a defective weld. arc welding arc welding is the most important welding process for joining steels. it requires a continuous supply of either direct or alternating electrical current. this current is used to create an electric arc, which generates enough heat to melt and create a weld. arc welding has several advantages over other welding methods. arc welding is faster because the concentration of heat is high. also, fluxes are not necessary in certain methods of arc welding, the most widely used arc-welding processes are shielded metal arc. gas-tungsten arc, gas-metal arc, and submerged arc.
Газовая сварка является процессом без давления с использованием тепла от газового пламени. Пламя наносится непосредственно на металлические торцы соединяются и одновременно с присадочным металлом в виде проволоки или прутка, называемый сварочный стержень, который расплавляется по отношению к суставу. Газовая сварка имеет преимущество использования оборудования, которое является портативным и не требует источника электроэнергии.поверхность свариваемого и сварочный стержень покрыты флюсом, легкоплавкого материала, который защищает материал от воздуха, которые сопротивляются бы в дефектной сварной шов.
дуговая сварка
Дуговой сварки является наиболее важным процессом сварки для соединения сталей. Для этого требуется непрерывная подача
либо постоянного или переменного электрического тока.этот ток используется для создания электрической дуги, которая генерирует
достаточно тепла, чтобы расплавить и создать сварной шов.
Дуговой сварки имеет ряд преимуществ по сравнению с другими методами сварки. Дуговой сварки происходит быстрее, так как
концентрация тепла высока. Кроме того, потоки не необходимы в некоторых дуговой сварки, Наиболее
широко используемые для дуговой сварки ограждены металлической дугой.газ-вольфрамовым электродом, газовая дуговая, и погружали
дуги.