圆背

结论：骨质疏松患者的脊柱畸形主要表现为脊柱的局部后凸尤其是胸段脊柱后凸角度的增大，其中又以凹圆背畸形最为多见。

Conclusion : The spinal deformities in osteoporotic patients are characterized by the local kyphosis of spine , especially thoracic kyphosis , and hollow round back is the most common deformity .

有两种款式：方背和圆背。每种款式又分别有硬背、软背、密背或空背。美国术语亦称书架背。

There are two kinds : a square / flat back or a round back . Each kind either has a hard / stiff back , a flexible back . Called Shelf-back in America .

圆背角无齿蚌寄生变态发育的初步观察

Preliminary observation on parasitic metamorphosis development of Anodonta woodiana pacifica

生长圆背：训练表白本人的心坎的感觉。

Direction of growth : Practice expressing your inner feeling .

三种寄生鱼对圆背角无齿蚌寄生效果的研究

Study on the Host Efficiency of the Three Kinds of Fish for the Anodonta woodiana pacifica

因此，圆背角无齿蚌的变态发育包括两个明显的阶段：第一阶段为寄生变态期；

Accordingly , metamorphosis development of A. wp includes two identical phases : the first is parasitic metamorphosis phase ;

圆背角无齿蚌在变态发育过程中其外部形态、内部器官、营养源发生了较大变化：成熟的钩介幼虫仅仅可以作简单的双壳开合运动；

During metamorphosis development , A. wp would change greatly in the external form , internal tissues and nutrient source .

形像就是外形要像猴子，如耸肩、缩颈、圆背、束身、弯肘、垂腕、曲膝等。

Similar image means that the appearance must resemble monkeys , such as shrugging , shrinking necking , round back , recoil , bending elbow , vertical wrist , lower the knees , and so on .