hyd
hyd — 縮寫
1. the written short form of hydraulics, especially in diagrams, repair notes, and
液壓
書面裡指液壓系統或液壓學
the written short form of hydraulics, especially in diagrams, repair notes, and course labels about machines powered by liquid pressure
The mechanic circled the hyd. line that fed the crane arm.
技師圈出了供應起重臂的 hyd. 管線。
hyd. line in a repair note
Marco chose hyd. instead of welding for next term's shop elective.
Marco 下學期工坊選修課選了液壓（hyd.），沒有選焊接。
The manual warns that a hyd. leak can drop the lift suddenly.
手冊警告說，hyd. 洩漏可能讓升降台突然下落。
Christopher labeled the pump sketch hyd. before adding the pressure arrows.
Christopher 在加上壓力箭頭前，先在幫浦草圖旁標了 hyd.。
- hydraulics
the full technical term, used in speech and formal prose
文法句型
hyd. + line or pump
hyd. leak
course title + hyd.
用法筆記
Used mainly in technical writing, labels, and course shorthand rather than ordinary conversation. In maintenance contexts, it usually points to hydraulic parts, fluid pressure, or power-driven equipment.
常見錯誤
2. the written short form of hydrostatics, used in physics notes and chapter headin
流體靜力學
書面裡指流體靜力學的縮寫
the written short form of hydrostatics, used in physics notes and chapter headings about pressure in liquids that are not moving
Lien copied the hyd. formula beside the tank-depth diagram.
Lien 把 hyd. 公式抄在水槽深度示意圖旁。
hyd. formula in class notes
Week seven switches from fluids in motion to hyd. problems.
第七週會從流體運動改成做流體靜力學（hyd.）題目。
The professor wrote hyd. above the section on water pressure.
教授在談水壓的那一節上方寫了 hyd.。
Saira reviewed her hyd. notes before the lab on dam walls.
Saira 在研究壩壁的實驗前，先複習了流體靜力學（hyd.）筆記。
- hydrostatics
the full technical term, common in textbooks and lectures
文法句型
hyd. + formula or note
hyd. chapter
hyd. problems
用法筆記
This sense appears mainly in academic writing about fluid pressure at rest. If the context is pumps, moving oil, or machine controls, the abbreviation usually means the hydraulics sense instead.