Ultra-high pressure jet assisted drilling is an affective approach for improving penetration speed; and influential factors and mechanism of rock breakage are key technologies.

超高压水射流辅助破岩是提高机械钻速的有效途径，水射流破岩效果影响因素及机制研究是其关键之一。

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The forest crown interception precipitation, the penetration speed of soil, and the surface runoff of Larix Kaempferi forests in Funiu Mountain in Western Henan Province were measured in this paper.

测定了豫西伏牛山区日本落叶松林的林冠截流降雨、土壤渗透速度和地表径流。

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It is not surprising then that high-speed Internet penetration rate is below 1 percent in Africa, compared to close to 30 percent in some high-income countries.

因此，与高收入国家高达30%的高速互联网使用率相比，非洲高速互联网的使用率低于1%就不足为奇了。

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On Tuesday, Marlinspike launched CloudCracker, an upgrade to the Web-based penetration testing service he formerly called WPACracker, with a major upgrade to the speed and versatility of that password-breaking service.

FORBES: Moxie Marlinspike's CloudCracker Aims For Speedier, Cheaper Password Cracking