Asymmetry showed in "Funnel plot" may be related to publication bias and low quality of methodology.
倒漏斗图显示不对称可能与发表偏倚及临床试验的方法学质量低下有关。
参考来源 - 金纳多注射液治疗急性缺血性脑卒中随机对照试验系统评价·2,447,543篇论文数据，部分数据来源于NoteExpress
He deprecated the low quality of entrants to the profession.
他抨击了行业中的滥竽充数。
Paper had already existed in China, but the process for producing it was difficult and the paper was of low quality.
中国已经有纸了，但是生产纸的过程很困难，而且纸的质量也很差。
"Cheap" can mean inexpensive or low quality.
便宜“意味着不贵或者是质量差。”
Scott LaGanga,director of PhRMA, a leading pharmaceutical research and manufacturing company, says it's easy and profitable to sell look-alike,low quality drugs.
VOA: standard.2010.06.07
"In a lot of the parts of the developing world this trust could be broken and because it's become so profitable to distribute,sell,manufacture, a lot of these products that are of low quality, and substandard."
VOA: standard.2010.06.07
Or,he said human DNA really was present in the bone, but the bone was too small or low-quality to repeat the first results.
VOA: special.2011.03.15
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