He wants to see how hard it is to crack into the network without even touching a single tool.

他想知道要闯入网络而不使用任何工具的难度如何。

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Crack-free surface that is formed in ductile regime of glass can be obtained under conventional cutting conditions if the tool parameters are chosen properly.

如果刀具参数选取得当，能在常规切削用量下获得在玻璃的塑性域内形成的、无微裂纹的加工表面。

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It found that this kind of wheel has high efficient for sharpening tools. Using this wheel can avoid the tool surface crack due to grinding and reduced the dust in shop.

通过研究发现，浸渗砂轮在刀具刃磨方面是一种非常有效的工具，对于防止刀具表面磨削烧伤和减少车间粉尘污染有其特殊的使用价值。

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Cyber security researcher Robert David Graham found the published file from the Stratfor hack and used password-cracking tool oclHashtcat to crack the password over the weekend.

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We were able to crack the VNC password by using a VNC Cracking Tool.

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The software can import the passwords you've already stored through your browser's Autofill tool or it can generate replacement passwords that are difficult for hackers to crack.

BBC: Password protection on the road