double是什么意思

用法例句

The paper recommends the technical innovation of two heavy rollers of Φ750×1700 mm after which the energy consumption is decreased during operation.

介绍Φ750×1700 mm二重轧机改造的技术方案,改造后减少中间环节的能量损耗,同时自动化水平高,运行稳定,维护方便,轧制速度快,生产成品率和产品质量大幅度提高。

A two-fold penetration coordination polymer [Cu(bpy)(OH)]n (1) (bpy=4,4'-bipyridyl) has been synthesized through hydrothermal reaction and structurally characterized by single crystal X-ray diffraction method.

利用水热反应,合成了一个具有二重穿插结构的一价铜配位聚合物[Cu(bpy)(OH)]n(1)(bpy=4,4'-联吡啶),并利用元素分析,X射线单晶衍射,红外光谱以及热重分析等手段对标题化合物进行了表征。

Development of duplex PCR for detecting Escherichia coli O157:H7 in foods of animal origin;

动物性食品中大肠埃希氏菌O157∶H7特异性二重PCR检测方法的建立

Establishment of duplex PCR assay for quick differentiating capripoxvirus and orf viruses;

羊痘病毒和羊口疮病毒二重PCR鉴别检测方法的建立

Developmemt of duplex PCR assay for detection of duck plague virus and goose parvovirus;

二重PCR检测鸭瘟病毒和鹅细小病毒的初步研究