孔径光阑 aperture stop ; [光] aperture diaphragm ; Diaphragm ; AS
孔径光栏 aperture stop ; Aperture Diaphragm
大孔径光学系统 large-aperture optical system ; wide-aperture optical system ; aperture optical system
长半径光栅 long-radius grating
大孔径光束 high-aperture beam
孔径光阻 Aperture Stop
扫描孔径光电倍增管 scanning aperture photomultiplier
突变型大芯径光纤 step index large core fiber
综合孔径光学 synthetic-aperture optics
小孔径光束技术 SABT
这种抽油泵柱塞游动阀采用机械强制开启和关闭的结构，柱塞为等径光管、浮动结构，可防止发生气锁游动阀、阀球关闭滞后、砂卡柱塞现象。
The travelling valve of the pump is designed to be closed and opened forcibly, and the pump plunger adopts equal-diameter bare pipe with a floating structure to prevent gas lock and sand sticking.
结果表明，屈光变化（P<0.001）、眼球前后径（P<0.005）、眼球垂直径（P<0.05）及病理学观察获得有意义结果。
The results showed that refraction(P<0.001) , anteroposterior axis of eyeball (P<0.005), rectilinear axia (P<0.05) and pathology changes were significant.
本文从原理和系统实验论证了粗径SCOT玻璃毛细管柱与长光管FT-IR接口完全匹配。
This paper confirmed the complete match in glass capillary column GC of wide bore SCOT and FT-IR interface of long light pipe.
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