drip line
短语词形变化
drip lines
复数
drip lines
别名
dripline
释义与例句
n.
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1.
On the table of nuclides, the limit beyond which an atomic nucleus will immediately decay by emitting a proton or neutron.
Hydrogen-7 has so many excess neutrons that it lies beyond the neutron drip line, and will spit out neutrons until it becomes a particle-bound isotope.
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2.
The area defined by the outermost circumference of a tree canopy from where water drips onto the ground.
2010, instructions on bottle of Ortho Weed B Gon Max Be particularly careful applying within the drip line of trees and other ornamental species.
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3.
A pipe that has small holes at intervals, used to irrigate crops.