Based on the wear curve of lands of erosion guns and a calculation method of engraving pressure, an interior ballistic model with the engraving process is established.

以烧蚀火炮的阳线磨损曲线和一种挤进压力计算方法为基础，建立了考虑弹带挤进过程的内弹道模型。

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First it was the U. S. Bureau of Engraving and Printing's next-generation $100 bill production process, in Washington, D. C. On Wednesday, it was the U. S. Mint here, to see how coins are made.

首先，它是美国的雕刻与印刷局的新一代100美元的钞票生产过程中，在华盛顿，周三直流，这是美国铸币局在这里，看看硬币的。

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To avoid the pattern being distorted in the process of numerical control sculpting on a complex surface, a new method is put forward to generate the tool-path of engraving on the surface.

为了避免在复杂曲面的数控雕刻过程中出现图案的扭曲变形，本文提出了新的生成曲面数控雕刻刀具运动轨迹的方法。

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One of his colour pictures shows Naomi Savage, his one-time assistant who developed her own career as a photographer, and no doubt inspired by Man Ray, also invented a process called photographic engraving.

BBC: Man Ray's portraits go on show

Each is, appropriately, adorned with a four-claw dragon on the battery cover, and the engraving process is rather lengthy: it involves 20 stages and takes four highly-skilled master craftsmen 36 hours, eight of which are dedicated just to the dragon's scales.

ENGADGET: Vertu rings in the Year of the Dragon by welcoming a trio of Signature luxury phones

Although the process of transferring a musical composition from a gleam in the composer's eye into a handwritten manuscript and, finally, a performance-ready score has come a long way from the days of copper-plate engraving, it's a process rife with the possibility of transmittal error.

WSJ: Ravel| Mother Goose| New York Philharmonic| Arbie Orenstein