Results 31 to 40 of about 10,581 (70)
Gongye shui chuli, 1985 锅炉水处理的目的,主要是防止锅炉生成水垢和腐蚀,保证锅炉安全、经济运行。为此必须加强水质处理监督工作,选择科学有效的处理方法。我县有95%以上的锅炉用水都采用地下水,水质硬度在6.5-24.6毫克。
陶祖良
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[Determination of myclobutanil enantiomers in wheat and its processed products by ultraperformance liquid chromatography-tandem mass spectrometry based on a chiral stationary phase]. [PDF]
Se Pu, 2021 Qi Y +5 more
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[Experimental Study on the Characteristic Changes of the Immunological Microenvironment at the Maternal-Fetal Interface in IVF-ET Pregnancy]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2023 Liu Y +7 more
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Gongye shui chuli, 1990 本文描述了随锅炉给水进入锅炉的软水,负硬水和硬水在加热、受压和浓缩的情况下所发生的不同的物理和化学变化,并在此基础上提出根据物料平衡原理,经对炉水中各种离子进行分析后,即可初步判定锅炉的水处理工作是否正常,锅炉是否会结垢。
韩林安
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[Study on the Antioxidant Activity of Aloe-Emodin Metal Complex]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2021 Liu MY, Pan XL, Li XB, Wu B.
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Gongye shui chuli, 2002 磷酸盐处理是高参数汽包锅炉广为采用的一种炉内水处理方法。锅炉水中适当添加磷酸盐，能提高锅炉水的缓冲性能，维持炉水pH值，防止锅炉水冷壁的结垢、腐蚀。而协调pH-磷酸盐处理除向汽包内添加磷酸盐外，还添加其他药品，使锅炉水既有足够高的pH值和一定的磷酸盐浓度，又不含有游离NaOH，保证钠磷物质的量比在2。2～2。8范围内，不仅防止钙垢，而且还防止水冷壁管的碱性腐蚀，避免炉水pH偏低引起的故障。
江红, 吴楠, 程法杰
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[A prospective randomized controlled study on the effects of bicycle ergometer rehabilitation training on quadriceps and walking ability of patients with lower limb dysfunction caused by extensive burns]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2022 Wu KP +5 more
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Impairment of endometrial decidual reaction in early pregnant mice fed with high fat diet. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2022 Chen Z +8 more
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, 1989 一种防止炉膛结焦的煤粉锅炉组合风喷口装置。它由一次风喷口和二次风喷口组成。二次风喷口位于一次风喷口两侧，并且与一次风喷口轴线形成一定的角度α和β。侧二次风在炉膛壁面上可以形成气膜流层结构，从而达到防止炉膛壁面结焦的目的。同时，由于侧二次风速大于一次风速，因而二次风引射卷吸一次风中的空气，使一次风中局部煤粉浓度提高，从而又达到使得一次风粉流着火提前的目的 ...
吴承康 +4 more
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