选择符用英文怎么说

选择符的英文：
selector

• wave mode selector
  波模选择器
• Of a selector, a moving contact that engages with the contacts of a bank.
  与存储单元的触点相啮合的选择器滑动触点。
• The rotating cylinder with spiral grooves acts as a speed selector
  螺旋切口的旋转圆筒作为速率筛选器。
• You will try this out by creating a selector that performs a simple dispatch.
  您将通过创建执行简单分派的选择器来尝试此操作。
• Set the main switch selector to A (auto) or M (manual).
  把主选择开关转到A(自动)或M(手动)