Ball joint housing made of zinc base alloy.

球头座由锌基合金制成。

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Ball joint housing is an outer ring of radial spherical plain bearing, made of zinc base alloy.

球头座为向心关节轴承的外圈，由锌基合金制成。

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The ball joint has a substantially annular joint housing (3), in the cylindrical interior of which a ball socket (1) can be arranged.

该球形万向节具有一个基本环形的万向节壳体(3)，在其基本圆柱形的内室里面可以设置一个球壳(1)。

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Thanks to the fact that rents have risen much faster than incomes, nearly one in three households spends more than 30% of its income on housing, and one in eight spends more than 50%, according to Harvard's Joint Centre for Housing Studies.

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The Joint Center for Housing Studies of Harvard University reports that real median household incomes across all age groups under 55 have not increased since 2000.

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The Joint Center for Housing Studies of Harvard said in its 2011 report that the recession increased the pool of low-income renters at the same time competition for cheaper affordable housing units became more fierce.

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