提示：点击例句中的单词，就可以看到词义解释

Continuous smoking and progression of arterial stiffening : a prospective study .

前瞻性研究：持续吸烟与动脉僵硬的进展。

Now america 's stance is stiffening spines elsewhere .

如今美国的强硬姿态让各国政府都挺起了腰杆。

Material used for stiffening something .

用于加硬物体的物质。

The analysis on effect of base plate with stiffening rib in transmission towers .

输电铁塔塔脚底板加劲肋影响分析。

He performed the first space walk on his mission , but experienced both air leaks and material unexpected stiffening -- the latter of which made cramming himself back in the capsule a very near thing .

他在执行第一次太空行走的任务时，又是碰到空气泄漏，又是碰到材料意外硬化后者把他压回了密封舱，几乎让他丧命。