通常在样板上加上基本缝份。

Basic seam allowances are usually added to the blocks.

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选择一个大的一块布上缝或拼贴成的基本模式，然后用小块花边点缀。

Choosing a large piece of cloth on which to sew or collage into the basic pattern, then adorn it with small pieces of lace.

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论述了锅炉给水除氧器用新型PKXF型可调式旋缝节能喷嘴的结构、主要技术性能参数及基本设计原则。

The paper presents the construction, main technical performance parameters and basic design principles of a new PKXF type adjustable energy-saving gap and vortex deoxygenization sprayer.

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