Variations in disc speed, air. steam pressures produce different fibers. Similar to rockwool but the higher iron content; lower calcium content.

圆盘速率的变化空气蒸汽的压力生产不同的纤维类似于岩石棉而铁的含量更高更低的钙的含量。

youdao

Protrusion of lumbar intervertebral disc is the common diseases in the lower lumbar spinal canal.

腰椎间盘突出症是下腰部椎管内较常见的疾病。

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Objective To evaluate the clinical value of pedicle fixation and bone grafting for the treatment of degenerative lumbar disc diseases coupled with lower lumbar spine instability.

目的探讨使用椎弓根内固定加植骨治疗腰椎间盘退变性下腰椎不稳症的临床价值。

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The 20-something athlete hurt his knee running track five years ago so he switched to disc golf, a lower impact game.

VOA: standard.2010.08.03

Our "road tax" (i.e. the tax disc) is actually significantly lower in cost than in mainland Europe, and in terms of other taxes, notably income tax, we pay far less than the other European countries.

BBC: How can we improve UK transport?