| 词汇 | alumina |
| 释义 | BETA Examples of aluminaalumina isn’t in the Cambridge Dictionary yet. You can help! The materials of interest are platinum, alumina and silicon monoxide. The surfaces of each metal were ground and polished with sandpaper (300-4000) and alumina powder (0.3 m). In the natural environment aluminum is a highly reactive metal that develops an inert oxide film (alumina) uniformly covering all the surface of the metal. The components of clays are silica, alumina, water and appreciable quantities of alkaline earth elements. One-ml samples were taken and analysed using a gas chromatograph equipped with an alumina column and a flame ionization detector. In the fast discharge stage, the capillary can be an alumina tube with an inner radius of 500 m and length of a few centimeters. The alumina at this stage presumably adhered to the optic nerve fibers and the inner limiting membrane. On peeling from the edge inwards, the adhered alumina particles came out in a string like manner, bringing with it the fiber layer and the inner limiting membrane. They have even referred as an excuse to difficulties with high alumina cement in buildings which would be vital to the scheme. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I am not aware of any recent difficulties in obtaining insurance cover for dwellings containing high alumina cement concrete. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I am not aware that the presence of high alumina cement has caused any children to be kept away from school altogether. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Concrete made with high alumina cement undergoes changes in its crystalline structure, known as conversion, causing a loss of strength which is sometimes serious. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The use of high alumina cement concrete in housing has created problems for some owners in all forms of private ownership. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 They were defeated by the problem of high alumina cement. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 However, if high alumina cement is mixed incorrectly it can cause "rotting" and then the beam cannot take the strain. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 |
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