长渣是炉渣黏度随温度降低而逐渐升高，在黏度-温度曲线上无明显转折点的炉渣。一般酸性渣具有长渣特性，在生产中取渣样时，渣液能拉成长丝，冷却后渣样断面呈玻璃状。煤气化炉中多根据粘温特性曲线将炉渣进行分类，一般可分为长渣、短渣。
姑娘长点心吧，别把人海一粒渣当成河畔一朵花。
Girl long snack bar, do not crowd a riverside slag as a flower.
金属镍在电渣精炼前需用氩弧焊焊接接长，为保证焊接接头具有足够熔深，需要大参数进行焊接。
Nickel rod needs to be lengthen by argon arc welding before the electroslag refinements, large welding parameters are needed to assure the sufficient penetration.
磷渣粉作为掺合料对混凝土性能产生一些不利的影响，一是早期强度低，二是凝结时间长。
As we all know, the use of phosphorous slag powder(PSP)as admixture can lead to some adverse effects in concrete performance, such as low early strength and prolonged setting times.
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