WordNet

equality of distribution (同)equilibrium, equipoise, counterbalance
a state of equilibrium
equality between the totals of the credit and debit sides of an account
the difference between the totals of the credit and debit sides of an account
a scale for weighing; depends on pull of gravity
compute credits and debits of an account
bring into balance or equilibrium; "She has to balance work and her domestic duties"; "balance the two weights" (同)equilibrate, equilibrize, equilibrise
be in equilibrium; "He was balancing on one foot"
using or subjected to a methodology using algebra and calculus; "analytic statics"
of a proposition that is necessarily true independent of fact or experience; "`all spinsters are unmarried is an analytic proposition" (同)analytical
using or skilled in using analysis (i.e., separating a whole--intellectual or substantial--into its elemental parts or basic principles); "an analytic experiment"; "an analytic approach"; "a keenly analytic man"; "analytical reasoning"; "an analytical mind" (同)analytical
expressing a grammatical category by using two or more words rather than inflection (同)uninflected
being in a state of proper equilibrium; "the carefully balanced seesaw"; "a properly balanced symphony orchestra"; "a balanced assessment of intellectual and cultural history"; "a balanced blend of whiskeys"; "the educated man shows a balanced development of all his powers"

PrepTutorEJDIC

〈C〉『天びん』,『はかり』 / 〈U〉〈C〉『つり合い』,均衡,平衡 / 〈U〉〈C〉(絵・デザインなどの)調和 / 《the~》《話》残り / 《単数形で》(貯金などの)差引き残高,(取引の)収支勘定 / …'を'『つり合わせる』,‘の'平衡を保つ / 〈重さ・重要性〉'を'比較評価する,比べて考える / …'を'差引き勘定する / …‘と'つり合う,調和する / 均衡(平衡)を保っている,つり合っている / 決算する,収支が合う / (どちらを取ろうかと)迷う,ちゅうちょする
意志強固な,心のぐらつかない

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/06/10 17:33:47」(JST)

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Mettler digital analytical balance with 0.1 mg readability.

Mechanical analytical balance

Automated analytical balance, 1950s

Mechanical analytical balance (detail)

An analytical balance is a class of balance designed to measure small mass in the sub-milligram range. The measuring pan of an analytical balance (0.1 mg or better) is inside a transparent enclosure with doors so that dust does not collect and so any air currents in the room do not affect the balance's operation. This enclosure is often called a draft shield. The use of a mechanically vented balance safety enclosure, which has uniquely designed acrylic airfoils, allows a smooth turbulence-free airflow that prevents balance fluctuation and the measure of mass down to 1 μg without fluctuations or loss of product.^{[citation needed]} Also, the sample must be at room temperature to prevent natural convection from forming air currents inside the enclosure from causing an error in reading. Single pan mechanical substitution balance maintains consistent response throughout the useful capacity is achieved by maintaining a constant load on the balance beam, thus the fulcrum, by subtracting mass on the same side of the beam to which the sample is added.^{[citation needed]}

Electronic analytical scales measure the force needed to counter the mass being measured rather than using actual masses. As such they must have calibration adjustments made to compensate for gravitational differences.^[1] They use an electromagnet to generate a force to counter the sample being measured and outputs the result by measuring the force needed to achieve balance. Such measurement device is called electromagnetic force restoration sensor.^[2]

References

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1. Chapter 9A：水分バランスと血漿浸透圧の調節 chapter 9a water balance and regulation of plasma osmolality
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