| 1. | Reflux leads to recurrent or refractory aspiration pneumonia .
反流可引起复发的难治的吸入性肺炎。 |
| 2. | Mules are refractory .
骡子是难驾御的。 |
| 3. | The main difficulty was failure of refractories at high temperature .
其主要的困难是高温下耐火材料的损坏。 |
| 4. | Silicate minerals are characteristically refractory and difficult to break down .
硅酸盐矿物的特点是耐熔和难以分离。 |
| 5. | Successive bouts of heart failure are apt to become more refractory to treatment .
连续发作的心力衰竭可能变得难于治疗。 |
| 6. | This is not to belittle the enormous progress in the development of refractories .
这并非是小看耐火材料发展中的巨大进步。 |
| 7. | Greece has been producing refractory grade chromite ore for more than a hundred years .
希腊生产耐火级铬铁矿石已有百余年历史。 |
| 8. | The excreta of humans and land animals contain soluble refractory organic matter .
人和陆生动物排泄物含有可溶的难处理有机物质。 |
| 9. | Care must be taken to completely seal entrance plugs(eg. at a manway)in refractory linings .
必须小心地完全封闭耐火材料衬里的进口门。 |
| 10. | In severe or refractory cases, cauterization of the individual lesions with nitrate has been used .
在严重或顽固性病例中，个别的可用硝酸盐烧灼。 |
