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| 1. | The effective cost dust content of molding sand should be determined according to time factors such as |
| 决定型砂中的有效煤粉含量应根据煤粉质量的优劣、铸件大小和厚薄，浇注温度、面砂或单一砂等因素。 |
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| 2. | dust content of air |
| 空气含尘量 |
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| 3. | The method of environmental test for analytical instruments-Sand and dust content of the air test |
| GB/T11606.11-1989分析仪器环境试验方法砂尘试验 |
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| 4. | dust content in stack gas |
| 废气含尘浓度 |
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| 5. | maximum dust content |
| 最大含尘量 |
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| 6. | dust fall content |
| 降尘量 |
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| 7. | checking the hygiene conditions of the goods;examining whether the noise, dust content, radiation and |
| 检查货物卫生状况；检测货物在运行状态下的噪声、粉尘含量、辐射以及排放物是否符合标准。 |
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| 8. | Winds with continental provenances frequently have a higher dust content than those with maritime provenances |
| 来自大陆的风比来自海洋的风通常具有更高的尘埃含量。 |
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| 9. | The influences of melting temperature, inoculation, chemical composition, moisture and coal dust content |
| 叙述铁液熔炼温度、育处理、学成分、砂水分和煤粉含量、脂砂含氮量以及加工余量等因素对灰铸铁加工性能的影响,并就如何改善加工性能提出建议。 |
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