At very low concentration in experiment, the phenomena of avalanche transverse expansion was observed obviously.
在三乙胺浓度很低时，实验观察到明显的雪崩横向扩展现象。
Callus with axial deviation, low density areas or an insufficient transverse diameter during the lengthening procedure must be treated carefully.
骨痂带有轴向偏移、低密度区、不充分的横径在延长的整个过程中必须采取相应的措施以确保延长骨良好的愈合。
Transverse fractures above S4 have a high rate of associated neurological injury, whereas the risk below this level is low.
S4以上横行折合并神经损伤几率高，而此节段以下神经损伤风险低。
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