ccd
ccd — noun
1. a poorly understood problem in which the adult bees of a hive suddenly leave and
a poorly understood problem in which the adult bees of a hive suddenly leave and die, causing the colony to collapse — a serious threat to farming because bees are needed to pollinate crops
Nikhil's beekeeping business lost half its hives to CCD last spring.
CCD as object of 'lose to'
Devika and her research team are still investigating what causes CCD in honeybee hives.
Apple farmers in Washington state worry CCD leaves too few bees for orchards.
Haruto read that CCD may be linked to pesticides, parasites, and poor nutrition in bees.
Professor Christopher's team at Cornell University launched a five-year study on CCD spread.
- colony collapse disorder
the full, non-abbreviated name; used in formal scientific writing
文法句型
CCD as subject + verb
CCD as object of 'suffer from' / 'linked to'
用法筆記
Usually written in capital letters (CCD). This sense refers only to the bee-disorder meaning; distinguish from CCD as an image sensor (sense 2).
常見錯誤
2. a light-sensitive electronic chip that converts light into digital signals, used
a light-sensitive electronic chip that converts light into digital signals, used in cameras, telescopes, and scanners to capture high-quality images
The Nikon D70 uses a CCD sensor to capture light and produce an image.
CCD as object of 'use'
The Hubble Space Telescope relies on a large CCD to take pictures of distant galaxies.
Yael replaced the CCD in her lab's microscope to get clearer cell images.
CCD sensors produce less digital noise than modern CMOS sensors in low light.
The astronomer carefully cleaned the CCD chip before the night of observation began.
- charge-coupled device
the full name; used in technical documentation and specifications
文法句型
CCD as subject + verb
CCD as object of 'use' / 'replace'
用法筆記
Frequently combined with 'sensor' or 'chip' (CCD sensor, CCD chip). Distinguish from CMOS sensors, which are a newer competing technology.