lack of fusion

基本解释

As backing bar for grooved weld on beam flange exists, artificial crack is formed because of lack of fusion at the root of flange weld.
由于梁翼缘的平坡口焊缝垫板结构存在，梁翼缘焊缝根部融合不良而形成“人工” 裂纹。
The weld shall be free of any lack of fusion, undercutting, cracks and other defects which could impair the worability or use of the product in question as specified by the purchaser.
焊缝不能有未熔合，咬边，裂纹和其它影响产品工作和使用的缺陷。这些都已经经过采购人员的一再强调。
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This article analyzes the weld defects such as:blowhole, slag inclusion, incompletely filled groove, overlap, lack of fusion, undercut , over-sized leg, also it puts forward the solution.
对立角焊中气孔、夹渣、未焊透、焊缝余高凸起、焊波脱节、咬边、焊脚尺寸过大等缺陷产生的原因进行了分析，并提出了有效的解决方法。

But fusion aficionados also blame a lack of urgency for the slow progress, claiming that at least 15 years have been lost because of delays in decision-making and what they regard as inadequate funding.
ECONOMIST: A step towards commercial fusion power. Perhaps
Oesterle, 59, admits the back surgery field is "clouded by a lack of evidence, " even as he insists that fusion is effective for many patients.
FORBES: Neurosurgery