flux

flux — 名詞

1. a situation in which something is changing continuously and has not yet reached

1.名詞B2
釋義

變動

持續變化、不穩定的狀態

a situation in which something is changing continuously and has not yet reached a stable or settled condition.

例句

The company's plans for international expansion are in flux while the board reviews the budget.

該公司的國際擴張計畫處於變動之中，董事會正在審查預算。

collocation: in flux

After the earthquake, the political situation in the region remained in flux for many months.

地震過後，該地區的政治局勢連續數月動盪不安。

同義詞
  • change

    neutral, general term; less specific than 'flux' about ongoing uncertainty

  • fluctuation

    stresses irregular shifting up and down rather than open-ended change

  • instability

    focuses on lack of firmness or predictability rather than the fact of change itself

  • uncertainty

    emphasises the mental state of not knowing rather than the objective process of changing

反義詞
  • stability

    a settled, unchanging condition

  • constancy

    the quality of staying the same over time

文法句型

often used in the phrase 'in flux' or 'in a state of flux'

用法筆記

Most commonly used in the fixed phrases 'in flux' or 'in a state of flux.' Unlike many other nouns that describe change, 'flux' emphasises that the change is ongoing and that no final outcome has been reached yet.

常見錯誤

❌The project is on flux.
✅The project is in flux.
💡The correct preposition is 'in', not 'on'.
❌The situation is in a flux.
✅The situation is in flux.' or 'The situation is in a state of flux.
💡'In flux' has no article; 'in a state of flux' does.

2. a steady stream of some material — for instance a liquid, gas, microscopic parti

2.名詞C1
釋義

流量；流動

物質、粒子或能量的流動或傳輸

a steady stream of some material — for instance a liquid, gas, microscopic particles, or heat energy — through a defined area, measured as a rate in scientific work.

例句

Scientists measured the flux of heat passing through the walls of the experimental chamber.

科學家測量了通過實驗室牆壁的熱流量。

pattern: flux of + [energy type]

The flux of water through the pipe was carefully controlled by an automatic valve system.

管道中水的流量由自動閥門系統仔細控制。

同義詞
  • flow

    more general and common; 'flux' implies measured or scientific transfer

  • movement

    broader, less technical; can refer to any kind of motion

  • transfer

    focuses on the movement from one place to another rather than the rate

反義詞

文法句型

flux + of + [substance/energy]

用法筆記

Primarily used in scientific and technical fields (physics, engineering, chemistry). In physics, 'flux' often has a precise mathematical meaning — the rate of transfer per unit area. The word is also used in fixed compound terms such as 'magnetic flux' and 'radiant flux.'

常見錯誤

❌The flux went through the pipe.' (when a general word for flow is intended)
✅The water flowed through the pipe.
💡In everyday English, 'flow' is preferred; 'flux' sounds overly technical.

3. a chemical substance applied to metal surfaces before soldering that cleans off

3.名詞C1
釋義

助焊劑

焊接金屬時幫助熔接的化學物質

a chemical substance applied to metal surfaces before soldering that cleans off oxides and helps the melted solder to spread and form a strong bond.

例句

Before soldering the wires together, Kian applied a little flux to each connection point.

Kian 在焊接電線之前，先在每個連接處塗上一點助焊劑。

collocation: apply flux

Flux dissolves the oxide layer on metal so the solder sticks properly.

助焊劑會溶解金屬表面的氧化層，使焊錫能確實附著。

同義詞

文法句型

[verb] + flux

flux + for + [material]

用法筆記

In electronics and metalworking, 'flux' is an essential material in the soldering process. It can be a paste, liquid, or a core inside the solder wire itself (called 'flux-core solder'). Do not confuse this sense with the general idea of 'flowing'.

flux — 動詞