English Explanation of Office Chair

The English term for "办公椅" is "office chair".

1. Definition and Classification
In a narrow sense, an "office chair" specifically refers to a backrest chair used for desk work in a sitting position, designed to meet the comfort needs of prolonged sitting. In a broad sense, it encompasses all chairs used in office settings, such as executive chairs (typically used by management, with a more luxurious design), staff chairs (used by ordinary employees, focusing on cost-effectiveness), etc. Its core feature is the presence of a backrest, distinguishing it from stools or bar stools without backrests.

2. Core Vocabulary Analysis

• Noun Meaning of "Chair":
  • The basic meaning is a single-person seat with a backrest, referring to specific furniture such as office chairs, dining chairs (dining chair), rocking chairs (rocking chair), etc.
  • Abstract meanings include:
    • The chairperson's seat in a meeting or organization (used with the definite article "the", such as "take the chair" meaning to chair a meeting);
    • A university professorship (e.g., "hold the chair of history" meaning to serve as a professor in the history department);
    • The head of a university department (e.g., "the chair of the department").
• Verb Meaning of "Chair":
  It means "to serve as chairperson" or "to chair a meeting", with common collocations such as "chair a meeting" (to chair a meeting) and "chair a committee" (to chair a committee).

3. Design Considerations for Office Chairs
The design of office chairs must strictly adhere to ergonomic principles to reduce the negative health impacts of prolonged sitting:

• Seat Height Adjustment: Adjust the height through a pneumatic rod or mechanical device to ensure the user's full foot rests flat on the ground, with the angle between the thigh and calf maintained at 95° to 100°, avoiding leg suspension or compression.
• Posture Optimization: It is recommended to lean back slightly (about 100°-110°), using the lumbar support to support the lumbar spine and distribute pressure; if leaning forward to work, it should be coordinated with an adjustable-height desk to maintain a natural spine extension.
• Monitor Height: Elevate the monitor with a stand so that the eyes are level with the top edge of the screen, avoiding neck fatigue caused by looking down or up.

4. Common Collocation Extensions

• Rocking chair: A rocking chair that promotes relaxation through back-and-forth rocking, commonly found in leisure settings.
• Dining chair: A dining chair designed to match the height of the dining table, usually without armrests to save space.
• Gaming chair: A gaming chair designed for gamers, with enhanced lumbar support and breathability, often equipped with an adjustable headrest.