| 词汇 | bulb |
| 释义 | bulb noun[ C ] uk /bʌlb/ us /bʌlb/ bulbnoun[C] (PLANT)a round root of some plants from which the plant grows: 球茎，鳞茎 tulip bulbs郁金香球茎 I planted some spring bulbs which should be coming up soon. Steve Gorton/Dorling Kindersley/GettyImages The biggest bulbs will produce the most flowers. Set the bulbs so that their tops are just above the surface of the compost and water well. Shallots are onions that form a cluster of small bulbs rather than one big bulb. Parts of plants axil bark bilobed blade caning cascara sagrada corolla endodermis floret inflorescence knot pistil rooty rosella seed coat seed pod sessile sting taproot vein bulbnoun[C] (ROUND PART)a hollow, round part at the end of a glass tube in a thermometer(= a device used for measuring temperature) that holds liquid that will expand(= increase in volume) to show the temperature: Most of the mercury (or other fluid) in a thermometer is in the bulb at the bottom. The bulb of the sugar thermometer should not rest on the bottom of the pan. a hollow, round, soft part at the end of a tube that can be pressed to force liquid or gas down through the tube, or to suck liquid or gas up through the tube : I put the dropper in the vial and squeezed its rubber bulb, blowing a bubble of air into the liquid. She suggests that parents of infants use saline drops and a suction bulb to help remove mucus. Changes in temperature are reflected when the fluid moves up or down the thin air bubble, or capillary, above the bulb. If the bulb of the thermometer is immersed in a vessel of water which is heated, the mercury will expand and will rise in the thermometer tube. The doctor immediately strapped to my arm that plastic cuff with the bulb and meter attached, to take my blood pressure. Measuring, weighing, & counting devices -scopic adding machine detector dial dipstick dosimeter fitness tracker gage gamma counter gauge gradation indicator manometer micrometer probe scope smart meter straight edge theodolite tracker You can also find related words, phrases, and synonyms in the topics: Medical dressings, supports & devices Machines - generators & pumps bulb | American Dictionarybulb noun[ C ] us/bʌlb/ bulbnoun[C] (LIGHT)a light bulb: The bulb burned out in the kitchen. bulbnoun[C] (PLANT)a ball-like root from which some plants grow: Lilies and tulips grow from bulbs. Examples of bulbbulb A number of respondents thought they might be safer than ordinary bulbs, as they needed to be changed less often. In addition to the dry appearance the bulbs are frequently quite definitely below the size to be expected and are somewhat soft. We did not detect any reporter+ cells with neuronal morphology in the olfactory bulb of double transgenic mice. The user therefore has to interpolate from his measured wet-bulb temperature to find the vapour pressure or relative humidity. Thus, it became necessary to document and study the monoliths at night, using the battery of an automobile and lamps with low-voltage bulbs. A directly viewed grain-of-wheat bulb, placed off to the side in the dimly illuminated room, was used for peripheral fixation. This work included cutting the lateral olfactory tract, thereby isolating the olfactory bulb from olfactory cortex. The child then experienced six acoustic probes which alternated between the light bulb being on and off (on, off; on, off; on, off). The bulbs were switched on and o manually each day at 1730 and 2030 hours respectively. Most noticeable was the beginning of the formation of the median bulb; the nucleus of the dorsal oesophageal gland also became pronounced. As previously stated, mites congregate upon the buds at about the time at which these are extruded from the bulb neck. The ambient temperature was recorded using a dry bulb thermometer. As the foliage dies back the mites wander along it and so cross to adjacent bulbs. Undamaged bulb b emits light if s2 is closed. Despite this the cumulative effect upon the bulb of mite infestation is extremely serious. See all examples of bulb 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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