| 单词 | guard cell |
| 释义 | guard cell noun[C] biologyspecializeduk/ˈɡɑːd ˌsel/us/ˈɡɑːrd ˌsel/on aleaf, one of apairofcellspositionedaround eachstoma(= asmallholein thesurface)thatopenit toreleasegasesorcloseit topreventwaterfrom beinglost 植物的保卫细胞（保卫细胞组成环状，构成了叶子的气孔，能控制气流的进出，阻止水分流失。）Cells
Examplesofguard cellguard cell There were no significant differences inguardcelllength between the leaves from the two distinct light conditions for any of the study species. From theCambridge English Corpus Their stomatal density andguardcelllength were also examined using nail-paint prints. From theCambridge English Corpus On the south side of the entrance passage is a small side-chamber, sometimes called aguardcell. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.It included aguardcell, an intramural chamber and a stair entrance at ground level. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.There are no indications of an intramural room (guardcell) at the entrance. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.It is normal for there to be a cell breaking off from the passage beside the door; this is known as theguardcell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.The opening to theguardcellis 61 centimeters square. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.On the north side of the entrance passage is a small side-chamber, of a type usually called aguardcell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.On the left side of the entrance passage is a small side-chamber, sometimes called aguardcell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.There are no subsidiary cells, and the guard cells appear level with the rest of the epidermis. From theCambridge English Corpus The length measured was taken as the longest dimension from the outer edges of the guard cells. From theCambridge English Corpus The boundary conditions for the current and pressure moments are then imposed on the guard cells as with the case of the fluid. From theCambridge English Corpus However, for shade plants, the upper epidermis had longer guard cells than the lower epidermis. From theCambridge English Corpus The length of the guard cells was also measured using a graduated eyepiece. From theCambridge English Corpus There are signs of an upper intramural gallery, and there are traces of intramuralguardcellon the southeast side but no remains of the entrance can be seen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.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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