In continuous hot-dip galvanization process the corrosion and chemical stability of the sinkroll in the galvanizing bath are important problem which effects on the quality and productivity.
在连续热镀锌生产过程中，在熔融锌槽中，沉没辊的耐蚀性和化学稳定性是影响产品质量和生产率的重要因素。
2
Staying on your back, aim to sink loosely into the mattress until you feel it is time to roll into your desired position.
在背部停留，目的是离床垫放松向上抬起直到你感觉到背部抬起到你渴望的高度。
3
the torso and head are the hardest to "erase"! ) Staying on your back, aim to sink loosely into the mattress until you feel it is time to roll into your desired position.