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### arc

• IPA[ɑːk]

英式

• a part of a curve, especially a part of the circumference of a circle；a shape or structure resembling an arc
• move with a curving trajectory；form an electric arc

• 釋義
• 相關詞

### 名詞

• 1. a part of a curve, especially a part of the circumference of a circle the point where a tangential line touches the arc of a circle
• a shape or structure resembling an arc the huge arc of the sky
• a curving trajectory he swung his torch in a wide arc
• indicating the inverse of a trigonometrical function.
• 2. a luminous electrical discharge between two electrodes or other points modern welding generators are designed so that there is a high voltage for striking the arc
• 3. (in a novel, play, or film) the development or resolution of the narrative or principal theme his transformation provides the emotional arc of the story

### 動詞

• 1. move with a curving trajectory the ball arced across the room
• 2. form an electric arc the outage was caused by a bad switch that arced I have no idea whether they touched the power lines or arced

### arc light

• a light source using an electric arc.

### arc furnace

• a furnace that uses an electric arc as a heat source, especially for steelmaking.

### arc sine

• a mathematical function that is the inverse of the sine function.

### arc welding

• a technique in which metals are welded using the heat generated by an electric arc.

### arc lamp

• a light source using an electric arc.

### arc tangent

• a mathematical function that is the inverse of the tangent function.

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### arc

• IPA[ärk]

美式

• a part of the circumference of a circle or other curve: the point where a tangential line touches the arc of a circle
• move with a curving trajectory: the ball arced across the room

### ARC

• IPA[ɑːk]

英式

• (in the UK) Agricultural Research Council.

### ARC

• IPA[ärk]

美式

• AIDS-related complex.