| 单词 | holdup |
| 释义 | holdup (hoʊldʌp) also hold-up Word forms: holdups 1. countable noun A holdup is a situation in which someone is threatened with a weapon in order to make them hand over money or valuables. What could have happened? A hold-up? There'd been no gunshot or scream. 2. countable noun A holdup is a delay. ...bureaucratic holdups and legal wrangles over the contract. 3. countable noun A holdup is the stopping or very slow movement of traffic, sometimes caused by an accident which happened earlier. They arrived late due to a freeway holdup. holdup in American English (ˈhoʊldˌʌp) US noun 1. a stoppage; delay or hindrance 2. the act of stopping forcibly and robbing 3. Informal the act of overcharging 4. Chemistry a. the amount of liquid retained or delayed during fractional distillation and certain types of solvent extractions b. the free volume between the resin particles in an ion exchange column 5. Physics the amount of fissionable material being processed or in storage for irradiation in a reactor cycle holdup in Chemical Engineering (hoʊldʌp) noun (Chemical Engineering: Operations, Liquid-liquid operations) Holdup is a type of measurement which shows the amount of a dispersed liquid per unit volume of a liquid-liquid contactor (= something which brings twoliquids together). The volume fraction of the dispersed phase, commonly known as the holdup, can be adjusted in a batch extractor by controlling the relative volumes of eachliquid phase added. A high liquid holdup also can be advantageous if the reactions take place in the homogeneous liquid phase. Holdup is a type of measurement which shows the amount of a dispersed liquid per unit volumeof a liquid-liquid contactor. Examples of 'holdup' in a sentence |
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