傲慢物 发表于 2025-3-25 06:40:24
Sohyun An,Theresa Alviar-Martindicated by means of a pointer. The indication given by a . is in the form of a series of numbers; the smallest change in the indicated quantity corresponds to a change of ± 1 digit in the least significant position of the number.Cardioversion 发表于 2025-3-25 08:12:40
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Electrical Units,r at a particular time as it warms up is known as ., and is assigned the lower-case (small) alphabetical character appropriate to temperature, that is, . or . (Greek). The final temperature is assigned the upper-case (capital) character, that is, . or .. A range of these symbols is shown in table 1.1野蛮 发表于 2025-3-26 04:27:32
Electrical Units,rtain basic units for length, mass, time, electric current, absolute temperature and luminous intensity. A list of the units, together with their basic symbols is given in table 1.1. The value of many quantities varies with time. For example, after switching a central-heating system on, the temperat鞭打 发表于 2025-3-26 11:20:42
The Magnetic Field,etected by the mechanical force on iron filings, or on another magnet or on a current-carrying conductor. In some cases the magnetic field can be detected by sensing an e.m.f. which is induced in a coil of wire (.). We do not fully understand what a magnetic field is, and so we describe it as ..octogenarian 发表于 2025-3-26 14:17:32
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