因此，无论是疏松或胶结，沉积物总体积都有一部分是由空隙组成的。
Thus a proportion of the total volume of any sediment, loose or cemented, consists of empty space.
骨质疏松和股骨折已经成为一部分人的主要健康问题了，而目前的挑战是要区分出这样一部分高危人群。
While osteoporosis and hip fractures are major health concerns for some people, the challenge is finding out who is at risk and who is not.
但是对一部分人来说，他们的骨密度会很快得降低，导致骨骼变得疏松，增加了骨折的风险性。
But for some, the decline in density is rapid, as their bones become porous and fracture risk increases.
目的观察体外冲击波对骨质疏松兔股骨髁部松质骨的成骨作用。
Objective To investigate the treatment effects of extracorporeal shock wave (ESW) on femoral condyle in an osteoporosis rabbit in vivo.
注入颞筋膜下疏松结缔组织中者，充填物可经颧弓深面再向前沿面颊脂体蔓延至颊部。
Polyacrylamide hydrogel injected into the loose connective tissue below the deep temporal fascia could spread down to the cheek.
长柄头铲，拨火棒：一种铁制工具，端部宽阔扁平，用于疏松炉渣和从炉栅中清除炉渣。
An iron tool with a broad flat end, used to loosen and clear out clinkers from furnace grates.
做为全身骨骼的一部分，颌骨的骨丢失一直被认为与全身骨质疏松存在关联性。
As a part of the whole skeleton, oral maxillofacial bone loss has some association with systemic osteoporosis.
结果表明，造成碳纤维力学性能低的直接原因可以归结为严重的皮芯结构、芯部组织疏松或有孔洞出现、晶相少且无明显取向、石墨层排列紊乱。
The results demonstrate that the carbon fibers which have serious skin-core structure, few graphite layers which intricately piled up have low mechanical properties.
叶部表皮的表皮毛和气孔器明显增多、叶肉细胞排列较对照结构疏松且细胞间隙大。
Additionally, the Numbers of stomata and trichomes on the leaf lower-surface increased, and mesophyll cells were looser arranged and its intercellular space was larger.
叶部表皮的表皮毛和气孔器明显增多、叶肉细胞排列较对照结构疏松且细胞间隙大。
Additionally, the Numbers of stomata and trichomes on the leaf lower-surface increased, and mesophyll cells were looser arranged and its intercellular space was larger.
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