| 词汇 | formaldehyde |
| 释义 | formaldehyde noun[ U ] uk /fɔːˈmæl.də.haɪd/ us /fɔːrˈmæl.də.haɪd/ a chemical (formula CH2O), used in industry and for preserving dead bodies and body parts : 甲醛 We dissected fish that had been preserved in formaldehyde.我们解剖了保存在甲醛中的鱼。 Chemicals, chemical compounds & gases acetic acid acetone acrolein acrylamide activated charcoal adenine agglomerate ethyl alcohol H2O HCFC HFC hyaluronic acid hydrochloric acid hydrochlorofluorocarbon laughing gas limescale metho meths oxyacetylene tartaric acid Examples of formaldehydeformaldehyde Small pieces of tissue were fixed with 3.7% formaldehyde and then embedded in paraffin wax. Collectors were provided with hermetic tanks to store samples in 10% formaldehyde. About 10 g of faecal samples collected from each dog was mixed thoroughly with 10% aqueous formaldehyde for preservation. All fruit and seeds available on the ground were censused along the trail and samples were fixed in 5% formaldehyde. The entire alimentary canal was removed and placed in vials containing 10% formaldehyde, and liver, lungs and body cavity carefully inspected for helminths. Fish were measured (total length) and dissected immediately after capture, and the alimentary tract was removed quickly, fixed and stored in 4% formaldehyde solution. Characterizing transcription factor binding sites using formaldehyde crosslinking and immunoprecipitation. Earthworms were separately collected from each 10-cm layer by hand-sorting and fixed in 4% formaldehyde solution for species identification. Application of indirect immunofluorescence to acetone-or formaldehyde-fixed mouse blood smears using the 'clone mouse' antisera at the first stage proved to give excessive background staining. Each faecal sample collected was mixed thoroughly with 10% aqueous formaldehyde for preservation. These compounds are hydrogen cyanide and formaldehyde, acting as precursors of complex biochemical substances. The mixture was fixed by adding 20 l of 5% formaldehyde, and then stained with 3 l of 0.5% erythrosin in 70% ethanol. The residue consists of a mixture of complex oxygen-rich organic species and is generally dominated by molecules derived from formaldehyde. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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