The shear stress on smooth blasting of pipe protecting borehole wall between free face and protecting face reaches as high as 3.

进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验，获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。

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Looking forward, there are continued challenges and barriers that women and girls face in protecting their health.

展望未来，妇女和女孩在保护自身健康方面继续面临着挑战和障碍。

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But developers and device makers face new challenges that include determining physical location accurately, turning coordinates into meaningful information, and protecting users' privacy.

但是，开发商和设备制造商面正在遭遇新的挑战，包括精确地确定人所处的实际位置，把坐标成有意义的信息，保护用户的隐私等。

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These whistle-blower provisions provide broader remedies for employees than do other whistle-blower protection laws, such as those protecting employees who face retaliation for reporting environmental or health and safety offenses.

FORBES: Magazine Article

While we have had success on traditional pollutants, there are other challenges to face in protecting America's waters today.

WHITEHOUSE: Blog Action Day: Protecting America��s Waters Today

Both countries face risks when it comes to protecting personal data and communications, financial transactions, critical infrastructure, or the intellectual property and trade secrets that are so vital to innovation and economic growth.

WHITEHOUSE: The White House