In the English language has long existed a popular expression “Chinese copy” (“Chinese copy”), meaning illegal the repetition of any industrial product without purchasing a license for its production. But for the 50-year history of military shipbuilding of China, this expression is very true in its literal translation. To this day, almost all combat units of the Chinese Navy are a patchwork of units and systems, carefully copied from Soviet or Western models.
Instruments based on the radio. Determination of the frequency of an unmodulated source, an external signal. With the help of measuring GS you can configure any radio transmitting and radio-emitting devices in the frequency range 150 — 12 000 kHz, in the CW mode, and the mode AM or IM. In the absence of signal modulation of an external RF source (CW mode), its frequency can be determined by the method of zero beating with the frequency of HS. The block diagram implementation of the method of zero beat is illustrated.
Small metal parts or, for example, lying on the table the needle is not so easy to grasp with your fingers. This can be done easily if you use… a thimble. Only it is necessary to attach a small magnet.
It would be good to have a set of different blades to the hose for irrigation, including end nozzle in the form of a slot: it has its advantages. And most importantly — this is easy to do from the existing tubular scraps. It is enough to insert one end of the tube a metal Read more…
In this issue we introduce young innovators, participants of operation “the Introduction” with an unusual method of drying developed in Nikolaev. At our request about it, say the authors of this new technology, which not only shortens the production cycle, but also provides high quality wood.
When employees of Institute of petrochemical and gas industry named. Gubkin turned in a circle electronic automation of the Moscow Palace of pioneers with a request to produce thermostats for chemical experiments, it is to no one’s surprise. Is not the first creative activities of the children’s team, led by F. Y. Yerokhin, goes jobs scientific institutions and industrial enterprises of Moscow. So this time they decided posed a technical challenge.
I read in your journal how you can reheat steam frozen hydrant. Was thinking of another application of such devices to heat the people in the field: a tent, a tent, under the tent on the boat — after all, the fire inside will not be bred. In this case, can help portable steam-heating system, consisting of steam generator (e.g. boiler), a hose and metal hand warmers-battery (say, cans).
To consider, compare, think, manage that work, which are handled by modern computers. With the help of electronic machines is calculated the orbit of the motion of planets, satellites and missiles, the calculated flight speed of elementary particles in nuclear reactors, control machines, production lines, shops and factories. The management of real objects with a computer basically boils down to converting discrete data into a continuous signal. This work is done by auto binary code converters — descramblers. The layout of one of these converters built in school No. 511 of Leningrad. Schematic diagram of the layout in the figure.
He was born in the terrible days of August, forty-one. It was created for combat and was ready to fight. Fast, agile, and with powerful small arms and rocket weapons, finally, sheltered armor — that was this aircraft, attack with the index of the su-6, logical conclusion of a long search KB Pavel Osipovich Sukhoi.
When working with bulk materials shovel is indispensable, as it improves productivity due to the increased volume of its “bayonet”. This advantage can be used and the collection of roots. And the shovel does not hurt them, its front edge is sufficient to attach a section of rubber hose.
