The first layer of leather surface accompanied by adequate supporting ring in providing excellent fit, seamless toe structure, fit and ventilation is good, durable wear.
头层皮鞋面配以中足支撑环提供出色的合脚性，无缝鞋头结构合脚且透气性好，经久耐穿。
The first layer of leather surface accompanied by adequate supporting ring in providing excellent fit, seamless toe structure, fit and ventilation is good, durable wear, summer is not the plot Khan.
头层皮鞋面配以中足支撑环提供出色的合脚性，无缝鞋头结构合脚且透气性好，经久耐穿，夏不积汗。
A previous study of anatomical changes in toe bone structure had dated the use of shoes to about 30, 000 years ago.
先前一项关于趾骨结构解剖学变化的研究，将人类开始穿鞋的时间确定为约3万年前。
It's a new method to increase fatigue strength of welded joints and structure by peening toe of weld with ultrasonic peening equipment.
使用超声波冲击焊趾来提高焊接接头及结构的疲劳强度，是一种国际上刚刚出现的新方法。
Overturning refers to the tipping over of the retaining wall as it rotates about the toe of the structure. The overturning force is the sum of each destabilizing force times its moment arm.
倾覆指挡土墙倾倒，相对于挡土墙沿它的结构支撑点旋转，倾覆作用是各个不稳定因素与力臂乘积的总和。
This can be accomplished by using toe boards, screens or brick guards; guard rails systems, nets, catch platforms, or canopy structure methods.
可以通过使用隔板、防护网或防护墙、扶手系统、防摔网、保护平台或天棚结构等方式来提供防落物保护。
Assessment results showed that all assessment points were located within the failure lines of analysis level 1 and 2. So the pipeline structure with surface flaw at the weld toe was safe.
评定结果表明，不论是采用一级或是二级评定，各评定点均在评定曲线定义的范围内，说明该结构是安全的。
Assessment results showed that all assessment points were located within the failure lines of analysis level 1 and 2. So the pipeline structure with surface flaw at the weld toe was safe.
评定结果表明，不论是采用一级或是二级评定，各评定点均在评定曲线定义的范围内，说明该结构是安全的。
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