质变

Osteoporosis is a metabolism disease of micro bone tissue disorganization , bony mineral matter and bony matrix reduce at same rate, sclerotin turn week, trabecula of bone decrease ,which make the brittleness of bone raise and fracture easily.It is common illness and frequently occurring illness in old people ,even in menopause women.

骨质疏松(Osteoporosis，OP)是一种以骨组织显微结构破坏、骨矿成分和骨基质等比例地不断减少，骨质变薄，骨小梁数量减少，导致骨骼脆性增加和易发生骨折的全身代谢障碍性疾病，是老年人的常见病与多发病，尤以绝经妇女为重。

The separate velocity decides the shape and size during the sphere phase. Linear relative motion differential equation can be used to reduce the debris density model. Rope and spiral is distinguished from geometry, orbital maneuver theory is used to analysis the existence of pinch point and pinch line.

在球形阶段起主要作用的是分离速度；椭球形阶段可以利用线性化相对运动方程进行分析；绳形与螺旋线形在几何上有质变，但都有结点和结线，并可以利用速度增量理论分析和解释其存在的原因。

The common and individual characters of the different development stages of urban agglomerations are analyzed.

在对城市群发展具有的共性特征进行阐述的基础上，对城市群不同发展阶段的量变与质变特征进行了综合表述。

"The interval encompassing the Vendian to Cambrian is perhaps the most enduring enigma in historical geology"(Hoffman, 1991). It is current viewpoint that the important transmutation of paleaocoenosis, palaeogeography and paleaostructure relates to the breakup of Rodinia supercontinent at this phase.

&文德期-寒武纪转折时期也许是地质历史中最恒久的谜&(Hoffman，1991)，目前认为，这一时期古生物、古地理、古构造的重大质变与Rodinia超大陆的裂解有关。

Through poetry, Roethke achieves the ritual metamorphosis of translating the personal into the universal, thereby enlarging our world.

罗特克通过诗歌完成了宗教礼仪般的质变，将个人经历转译为普遍经历，并因此扩大了我们的世界。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。