单据可以通过手签、签样印制、穿孔签字、盖章、符号表示的方式签署，也可以通过其它任何机械或电子证实的方法签署。
A document may be signed by handwriting, facsimile signature, perforated signature, stamp, symbol or any other mechanical or electronic method of authentication.
本文介绍了一种新型非开挖施工机械———液动穿孔机。
This paper describes a non - excavating construction machine - hydraulic perforator.
地下气动穿孔机是一种新型的非开挖施工机械。
The underground pneumatic perforation machine is the new type non-excavating machinery.
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