The bottom of screen board is set with hole core, lifting hole and positioning hook. The hole core and screens board can form a whole.

下部设有孔芯，吊耳、定位钩、孔芯均与卡位板铸成一个整体。

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The core is made up of matter that swirls closer to the black hole and approaches the speed of light, combining with tremendous magnetic fields in the process.

组成核心的物质呈涡旋状靠近黑洞，并在这一过程中与大量磁场结合，且其速度接近光速。

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This image may support the idea that the fireworks come from a star that fell into a supermassive black hole at the core of the galaxy. a.

在伍斯利看来，这颗巨大恒星的核心塌缩形成了一个黑洞，恒星的外层用了几天时间坠入黑洞并发出辐射，这就是我们观测到的这次爆炸持续时间超长的原因。

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Our own galaxy, the Milky Way, has a colossal black hole at its core, too, which is some three million times the mass of our Sun.

BBC: NEWS | Science/Nature | Deepest X-rays tell merger story

Verizon Communications reported another round of stellar returns at its Verizon Wireless arm, more than offsetting a growing revenue hole left by its declining core local-phone business.

FORBES: Verizon Goes It Alone

Horatiu Nastase says his calculations show that the core of the fireball has a striking similarity to a black hole.

BBC: Artist's representation of a black hole,