0 a small hole, or a number or line of small holes, made in a sheet of paper etc -- lỗ răng cưa
1 the act of perforating or being perforated. -- sự đục thủng
Perforation or damage to adjunct structures is also unlikely, and did not occur during our existing experience.
Off the perforation centreline, however, the boundary layer profiles are highly distorted.
The perforations consisted of eight 1 in. holes randomly arranged.
The samples obtained were studied histologically and the lungs examined with 1 cm serial sections for evidence of serious hemorrhage, contusion or pleural perforation.
The exploration and empirical quantification of light levels for at least three threshold conditions was performed by adjusting the perforation.
Numerous small perforations occurred posteriorly but fewer anteriorly.
We then examine the absorptive properties of this arrangement when the perforations are circular apertures.
Three 1-cm2 perforations were made on each side of the litterbags to allow macro-fauna to enter.
中文繁体
孔, 穿透膜(或組織的)孔, 在膜(或組織)上穿的孔…
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孔, 穿透膜(或组织的)孔, 在膜(或组织)上穿的孔…
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perforación, perforado…
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picote, perfuração…
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perforation…
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perforace, děrování…
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perforering…
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lubang-lubang, pembuatan lubang…
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