The research result in the paper shows that accurate tool face angle can still be obtained under this circumstance.

研究表明，即使在这种情况下，完全可以求得准确的工具面角；

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The measure theories and methods of tilt angle and face angle are introduced combining with the composing principle and design of the transmitter of No-Dig navigating instrument.

结合非开挖导航仪器中探头部分的整体构成原理与设计，介绍了倾角、工具面向角等关键技术参数的检测原理与方法。

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The path, tempo and face angle seemed to line up fine in this admittedly un-scientific test, but more importantly, when the device said a putt was bad, we generally missed it.

ENGADGET: 3BaysGSA Putt: a Bluetooth golf gadget that puts eyes in your putter (hands on)

Following each flail, a clear graphic representation of your stroke path along with several key stats will display on your device: the critical putter-face angle at impact and tempo, among others.

ENGADGET: 3BaysGSA Putt: a Bluetooth golf gadget that puts eyes in your putter (hands on)

But since a single degree deviation of the face angle can cause you to miss a six foot putt, this data can help set you straight, once you figure out how to use it.

ENGADGET: 3BaysGSA Putt: a Bluetooth golf gadget that puts eyes in your putter (hands on)