可能的原因

Chondromalacia causes pain behind the knee, which gets worse when bending, stretching or putting excess pressure on the knee joint. You may also feel, and even hear, a grinding sensation in the knee.

软骨软化症的原因疼痛背后的膝关节，这进一步恶化时，弯曲，伸展或把过剩的压力，膝关节，你可能也觉得，甚至听到，磨削轰动，在膝关节。

By means of chemical analysis, rigidity test, metallographic examination and fracture analysis, it was found that the main reason for the backup roll's desquamation was possible crack headspring which was offered by impurity in interior tissue.

通过对其进行成分分析、硬度测试、金相检验及断口分析，确定了支撑辊剥落的原因：内部组织中夹杂物等提供了可能的裂纹源，裂纹在此产生并逐渐扩展，起初因摩擦磨损在轧辊表面形成轻微点蚀及小块剥落，受到辊型和载荷等其他外部因素的影响，在应力集中部位产生大面积剥落，从而导致轧辊报废。

By means of chemical analysis,rigidity test,metallographic examination and fracture analysis,it was found that the main reason for the backup roll's desquamation was possible crack headspring which was offered by impurity in interior tissue.The crack came into being here and then extended outward gradual...

通过对其进行成分分析、硬度测试、金相检验及断口分析，确定了支撑辊剥落的原因：内部组织中夹杂物等提供了可能的裂纹源，裂纹在此产生并逐渐扩展，起初因摩擦磨损在轧辊表面形成轻微点蚀及小块剥落，受到辊型和载荷等其他外部因素的影响，在应力集中部位产生大面积剥落，从而导致轧辊报废。

The results indicate that the low level resistance to tribenuron-methyl in the biotype of Galium aparine from Xuchang, Henan Province, is based on the excessive expression of ALS and the enhancement of tribenuron-methyl metabolism resulting from GSTs, not due to the sensitivity of ALS. In the meanwhile POD and SOD may play a role in alleviating the spray injury.

抗药性生物型猪殃殃对苯磺隆产生抗性的原因可能是ALS过量表达及GSTs对苯磺隆的代谢作用加强，而不是由于ALS的敏感性下降，同时POD、SOD在减轻药害中也具有一定作用。

Lamuoak Village head, Mya Thaung:"The reason was we couldn't get rid of the salt; but maybe also because the government gave us foreign seeds, because this isn't local rice."

不能栽种的原因，不能排除是海水盐化的问题，但是还有可能是政府发给我们其他国家的稻种，因为这些不是本地稻种。

Presented as unknowns, the cases challenge readers to create a differential diagnosis just as they would in practice, including noninfectious causes that could present similar clinical findings.

为未知主办，案件挑战读者创造一个公正的鉴别诊断，因为他们在实践中，包括非感染性的原因，可能是相似的临床表现。

During the sediment of late Cretaceous Taizhou Formation and Paleocene Epoch Funing Formation, Subei Basin have formed dark shale containing lots of ostracoda that include predominated whole basin E12 Formation and E14 Formation and local K2t2 Formation, which have become main source rocks of the basin.

海侵的原因，可能是从晚白垩世晚期起，中国东部的地应力条件以引张力占优势，并在华北－渤海湾、苏北－南黄海和东海陆架区，发育了一系列为早第三纪巨厚沉积物所充填的半地堑箕状盆地，海水由东海向黄海海侵，造成陆架上箕状盆地在短时期内与海水相通。

However,compared to Cd~(2+) stress alone, treatment of SNP+Cd~(2+) caused more increases in SOD,CAT and POD activities, a decrease of H_2O_2 level and MDA content in leaf and root ofmung bean seedlings. These results indicated that exogenous NO induced increases inSOD, CAT and POD activities, which scavenged H_2O_2 and resultantly inhibitedmembrane lipid peroxidation in leaf and root of mung bean seedlings under Cd~(2+) stress.

说明NO通过诱导膜保护酶活性的提高，降低了活性氧水平，从而使Cd~(2+)胁迫诱导的膜脂过氧化程度降低，这可能是外源NO明显缓解Cd~(2+)胁迫抑制绿豆幼苗生长发育的原因之一。

Conclusion］There are development in adults of spondylolysis and spondylolisthesis,may be correlated to the disc degeneration.

结论］峡部裂性腰椎滑脱在成年人中也有一定的进展，椎间盘的退变可能是滑脱病理进展的原因之一。

If intracardiac right-to-left shunt is excluded for the reason of paradoxical gas existence, there remains possible transpulmonary or trans-abnormal vascular fistula passage of the gas.

如果排除心脏右至左分流为造成paradoxical气体栓塞的原因，则剩下可能的机转为经肺脏右至左分流或者肿瘤内存在异常的动静脉廔管。

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。