n. 體積效率；組裝體積效率
Valve timing is a major factor in achieving good volumetric efficiency.
定時閥是實現高容積效率的一個主要因素。
When the load is serious unbalanced, each sub-channel still keeps high volumetric efficiency and equal flow.
在各油缸支路出現嚴重負載不平衡時，仍保持高容積效率和相同流量。
The effect of residence time on ethanol yield, residual sugar, ethanol productivity and reactor volumetric efficiency were stu***d.
研究了停留時間對乙醇産量、殘糖量、乙醇生産能力和反應器效率的影響。
Using the meshing principle, we raise computer-simulated generation method and compare volumetric efficiency with other kind of claw type dry vacuum pump.
根據齧合原理，提出了計算機模拟創成方法并同其它爪型幹式真空泵的容積利用系數做出了比較。
A sliding vane compressor has many dominant advantages such as ****** construction, no eccentric rotary parts, small size, and high volumetric efficiency etc.
滑片壓縮機結構簡單緊湊、運轉平穩、容積效率高，目前其應用領域越來越廣。
Presented in this paper is the relationship between intake pressure wave actions and the general volumetric efficiency speed characteristics of multi cylinder engines.
本文論述的是根據台架試驗及模拟計算結果得出的多缸發動機進氣系統内壓力波動與充氣效率-轉速特性的關系。
This paper introduces the effect of connecting pipe length of the flow measurement system on volumetric efficiency and torque characteristic of gasoline engines.
本文介紹了節流式流量測量系統外接管長度對汽油機充量系數和扭矩特性的影響。
Since scroll compressor has neither suction valve nor clearance, its volumetric efficiency is 90-98%, while that of reciprocating compressors is only 65-75%.
沒有吸氣閥，沒有餘隙容積容積效率可以達到90%-98%，而多缸活塞式壓縮機容積效率隻有65%-75%。
The test method of pressure loss, flow loss and frictional force loss etc. of the hydraulic pumping units is presented, from which the mechanical efficiency and volumetric efficiency are obtained.
給出了測取液壓抽油機系統壓力損失、流量損失以及油缸的摩擦力損失等的方法，并由此求出系統的機械效率與容積效率。
The test results showed that, without obvious increase of volumetric efficiency, this system is able to make obviously change to the particulate and NOx emission.
結果表明，該系統在不影響進氣充量系數的情況下，可以明顯改變柴油機微粒和氮化物的排放量。
In this paper, the influences of compressor speed and work condition on compressor volumetric efficiency were analyzed based on experiment under automotive air-conditioning conditions.
針對汽車空調壓縮機的特點，在實驗的基礎上，分析了轉速及工況對壓縮機輸氣系數的影響；
The test results show that, without obvious increase of volumetric efficiency, this system is able to make obvious change to the exhaust gas emission of ***sel engine.
試驗結果表明，該系統在不影響進氣充量系數的情況下，對柴油機有害氣體排放量影響顯著。
All along, there are fewer researches on the suction volumetric efficiency of heavy caliber piston pump and they are behind the needs of production development.
一直以來，對大口徑活塞泵吸入容積效率的研究較少，滞後于生産發展的需要。
The DA Feeder introduces material into the conveying system at highest volumetric efficiency when material flow into the feeder is controlled to permit free venting.
當流進供料機的材料可自動排空時，DA供料機可最大程度的将材料引入運輸系統中。
Besides, the equation used to predict the volumetric efficiency was given for variable speed reciprocating compressors.
拟出適合于轉速變化時的輸氣系數計算公式，可供估算變轉速壓縮式的輸氣系數。
Adequate inlet valve to prevent throttling of the incoming air, with the consequent loss of volumetric efficiency.
配置足夠的進氣閥的面積以防止因進來的氣體在節流過程中所産生的容積效率的損 失。
Whether the design of air valve is reasonable or not will directly influence air compressor's volumetric efficiency and working reliability.
氣閥設計是否合理将直接影響空壓機的容積效率和工作可靠性。
Finally the calibration on a WF4C27F-E gasoline engine is performed, and the MAP graphs of the volumetric efficiency and the spark advance angle are obtained.
最後針對WF4C27F-E汽油機進行了标定試驗，獲取了充量系數和點火提前角MAP圖。
Axis-direction clearance influences the volumetric efficiency and the torque efficiency of pneumatic vane motor.
軸向間隙影響着葉片式氣動馬達的容積效率和機械效率。
For intake system, adopting the resonant intake manifold construction, make use of the intake motive effect to increase volumetric efficiency;
對于進氣系統，采取諧振進氣的結構措施，利用進氣動力效應來提高進氣充量；
The adverse circumstances of filed work, incorrect operation and maintenance delayed often cause component destroyed and make the volumetric efficiency low down.
可控震源在野外工作的環境惡劣，再有非規範性操作或不及時進行系統維護等情況，就會造成系統元件的損壞。
It has characteristics of small size, low noise and working smoothly; further more, its volumetric efficiency is first rank in the displacement compressor domain.
渦旋壓縮機具有體積小，噪音低，運行平穩的優點，特别是容積效率更是比其他類型壓縮機有着明顯的優勢。
Dividing the actual flow by the theoretical value calculated above will yield a value which, taken as a percent, indicates volumetric efficiency.
實際流量除以理論流量得出一個數值，以百分比計，表示的即是容積效率。
When compression ratio is increased, the volumetric efficiency is increased, giving a fast burning rate and thus high thermal efficiency and power output.
壓縮比增加，發動機充量系數增加，燃燒速率加快，熱效率提高。
Volumetric efficiency of a new claw type dry vacuum pump was introduced.
介紹了一種新型的特殊爪型幹式真空泵的容積利用系數。
The volumetric efficiency of C-SB series of Scroll Compressors was investigated experimentally.
實驗研究了C-SB系列渦旋式壓縮機的輸氣效率。
體積效率（Volumetric Efficiency）是衡量内燃機或流體機械在特定工況下氣體吸入或排出能力的關鍵參數。其定義為實際進入氣缸的氣體體積與理論最大填充體積的比值，通常以百分比表示。例如，一台汽油發動機在标準大氣壓下若達到90%的體積效率，則表明其實際吸入氣體量為理論容積的90%。
該參數受多種因素影響，包括進氣系統阻力、氣體溫度、發動機轉速及氣門正時。根據《内燃機原理》（清華大學出版）分析，高轉速下氣體流動慣性增強可能短暫提高體積效率，但摩擦損失會抵消部分增益。渦輪增壓技術通過預壓縮進氣顯著提升體積效率，戴姆勒集團實驗數據顯示，增壓系統可使柴油機體積效率突破100%。
在航空工程領域，美國聯邦航空管理局（FAA）發布的《活塞發動機維護手冊》強調，海拔升高導緻的空氣密度下降會直接影響活塞發動機的體積效率，需通過可變槳距螺旋槳進行補償。工業壓縮機領域，阿特拉斯·科普柯公司研究表明，優化閥片啟閉時序可使往複式壓縮機體積效率提升8%-12%。
volumetric efficiency（體積效率）是工程和物理學中描述系統實際處理流體體積與理論最大處理能力比值的術語，具體解釋如下：
指在特定條件下，系統實際處理的流體體積與理論最大可能處理體積的比值，通常以百分比表示。其計算公式為： $$ eta_v = frac{text{實際體積流量}}{text{理論體積流量}} times 100% $$
内燃機
表示發動機氣缸實際吸入的空氣量與理論容積的比值，受氣門正時、進氣道設計等因素影響。例如，優化氣門定時可提升容積效率（）。
液壓系統
指泵或馬達的實際流量與理論流量的比率，洩漏會導緻該效率顯著下降（）。
石油工程
在油藏開發中稱為“體積波及系數”（volumetric conformance efficiency），描述驅油劑在儲層中的波及範圍（）。
該術語在不同領域的具體含義可能略有差異，例如：
如需更專業的定義，可參考機械工程手冊或流體力學教材。
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