Упражнение 38
- There are two basic approaches to modern microelectronics — monolithic integrated circuits and film circuits.
- We knew nothing about his having been sent to London.
- Film circuits are made by forming the passive electronic component and metallic interconnections on the surface of an insulation substrate.
- Which of the chemists expected to obtain a new substance with some new properties?
- We want them to introduce the changes as soon as possible.
- Can the quality of the material be improved?
- The higher reliability of the transistor circuits compared to vacuum tube equivalents is an extremely important advantage.
- The circuitry and software involved can be standardized.
- One of the primary considerations is to obtain a material with high electrical conductivity and low ohmic contact resistance.
- Most semiconductor devices are known to be made by introducing controlled numbers of impurity atoms into a crystal, the process called doping.
- Nevertheless the hole has a positive electric charge and can carry electric current.
- This protective layer is created very simply by exposing the silicon wafer at high temperature to an oxidizing atmosphere.
- By the use of a high-resolution photographic mask the desired configurations can thus be transferred to the coated wafer.
- The terms' are likely to denote the sequence of doped regions in the silicon.
- Oxygen concentration is known to influence many silicon wafer properties, such as wafer strength, resistance to thermal warping, minority carrier lifetime, and instability in resistivity.
- Having been three times seriously wounded, he was no longer fit for active service.
- Being told of his arrival, I went to see him.
- In one of the plants visited the delegates were shown new types of equipment.
- The quality of the goods is in accordance with the specification enclosed.
- The results required could not be gained immediately.
- His consulting the head engineer will help him greatly in designing the device.
- His offering new temperature conditions for the system will give greater efficiency.
- Reactive gas plasma technology is reported to be presently in wide-spread use in the semiconductor industry.
- The film technology has proved to provide precise dimensions.
- We were asked if discussing the design would take much time.
- A group of scientists proposed that special synthetic substances be added to wood so that it become stronger.
- The agent was to wait until the price went down.
- The advantages of this method is that our factory can make computers of any syzes.
- This amorphous material may be composed of crystals which are too small to be detected.
- Mendeleyev’s work resulted in publishing the Periodic Law of Elements which made him famous.
- One of the ways of producing tremendous energy is imitating on the Earth the process that makes the Sun shine.
- Some forms of abacus is still being used in some parts of the world because it can be understood without knowing how to read.
- Were I in his place, I should give up smoking.
- Had you met him somewhere in a street, you wouldn't have recognized him.
- I have written it very clearly so that he may be able to read it easily.
- It isnecessary that highly sensitive reception devices be made for the radio-telescope to achieve better results in observation.
- It is necessary that the engine should function properly.
2015-06-26
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