这个星系，被称为NGC1097，距我们5千万光年，和我们的银河系一样是个漩涡状星系，有着长长的、由群星组成的旋臂。
The galaxy, called NGC 1097 and located 50 million light-years away, is spiral-shaped like our Milky Way, with long, spindly arms of stars.
瑞士的一组天文学家认为他们在围绕恒星Gliese 581运动的轨道上发现了一颗岩状行星，距地球约有20光年。
The one that the Swiss team thinks it hasdiscovered is in orbit around a star called Gliese 581, some 20 light yearsfrom Earth.
试验了不同节距的螺旋扭状钢筋的粘结锚固性能。
The bond anchorage properties of the rolled and twisted bars with different pitch of twist were studied.
每根箍索每隔一段弧距通过焊接方法以圆柱或圆锥状的鼓身固定连接。
Each hoop cable is fixedly connected with the cylindrical or conical drum body at intervals of arc distance through the welding method.
每根箍索每隔一段弧距通过焊接方法以圆柱或圆锥状的鼓身固定连接。
Each hoop cable is fixedly connected with the cylindrical or conical drum body at intervals of arc distance through the welding method.
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