An annular eclipse occurs when the moon does not cover the entire disc of the sun so that a ring of light encircles the shadow of the moon.
当月亮不能完全遮住太阳时，月亮影子的周围就会有一圈亮光，日环食就发生了。
Before reassembling cover to gear operator, make sure disc is approximately 30 degrees away from full open position.
在把盖子重新安装在齿轮执行机构上之前，确认阀瓣位于全开位置处30度的地方。
Position clutch cover over disc and on flywheel.
把离合器盖板放在离合器片和飞轮上。
The whole apparatus is enclosed by vacuum insulation layer, magnetic fluid sealer and disc cover and supported on the machine base.
整个装置由真空保温层、磁流体密封器、圆盘状盖封闭，支承于机座上。
A transparent cover is provided to protect the disc against accidental marking or smudging.
圆盘外有透明的防护罩，以免偶然在圆盘上弄上污点或线迹。
The clutch which includes the flywheel, clutch disc, pressure plate, springs, cover and the linkage necessary to operate the clutch is a rotating mechanism between the engine and transmission.
离合器是位于发动机和变速器之间的一个旋转装置，它包括飞轮，离合器摩擦片，压盘。压紧弹簧。离合器盖以及操作离合器所需要的连接杆件等。
First check assembly O-ring, Disc holder assembly, Cover O-ring and Sensing passage O-ring.
第一止回阀总成O形环，阀瓣固定器总成，阀盖O形环和感应通道O形环。
The air inlet holes of the hand disc, the flanging of the wind guide cover and the flanging of the hand disc form an air inlet channel, resulting in a noise separating structure.
所述的手拉盘进气孔、导风罩上的翻边和手拉盘翻边形成进气通道，构成噪声阻隔结构。
Point out that owing to limitation of time in class, students should refer to the disc attached to their textbooks for the stuff we can not cover in class.
指出课堂中时间的有限，学生应该学习一下课本的配套光盘。
Hydraulic Disc Piston Press is all-in-one designed for hydraulic brake piston press, bleed block & cover and rotor truing fork for convenient pack and use.
本产品为携带收纳与操作之便利性，系将活塞推杆、档块及碟盘调整器等工具整合设计成一支多功能之油压碟煞维修工具。
Hydraulic Disc Piston Press is all-in-one designed for hydraulic brake piston press, bleed block & cover and rotor truing fork for convenient pack and use.
本产品为携带收纳与操作之便利性，系将活塞推杆、档块及碟盘调整器等工具整合设计成一支多功能之油压碟煞维修工具。
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