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- WHAT IS THE AVERAGE CONCENTRATION OF ALUMINIUM IN HIGH ALKALI ROCKS? 在强碱岩石中铝的平均浓度是多少?
- According to the data of sample,the time weighted average concentration(TWA)of each sampling spot were calculated. 根据测定的数值计算出每个测尘点的时间加权平均浓度(TWA)。
- By means of adsorption-eluation, the average concentration of Re is enriched 10 times. 经吸附一一洗脱后,铼富集约10倍。
- The declined rates of average concentration of phosphine in three bins were 3.62,4.06 and 5.15%/d. 熏蒸期间平均磷化氢浓度的每天下降率分为：3．62%25，4．06%25和5．15%25。
- In this regard, our annual average concentration level of RSP is comparable to those of the more polluted cities but not among the worst. 在这方面,我们的可吸入悬浮粒子含量水平,以全年平均计,与其他染情况较为严重的城市相若,但不在最差之列。
- The average concentration of the total protein of 5 samples was 76.33 g/L by BCA,179.59 g/L by Bradford, and 22.81 g/L by Lowry. 5份样本用BCA法测得总蛋白量为76 .;33g/L;Bradford法测得值为179
- This value,measured as ozone ,was initially set at an hourly average concentration not to exceed 80 ppb more than once per year. “毒理学试验表明，臭氧的浓度高于环境值可能对血液的生化活动产生危害，降低肺功能，增加一般呼吸系统的不适感。”
- The time weighted average concentration(TWA) of benzene in workplace (42 29 mg/m 3) was higher than that of our national maximum allowable concentration (6 mg/m 3). 作业车间空气中苯的时间加权浓度 (TWA)为 4 2 2 9mg m3,高于国家卫生标准 (6mg m3)。
- The researchers found that the long-term death rate from lung cancer rose by 8 per cent for every 10-microgram increase in the average concentration of PM2.5s per cubic meter. 他们发现，每立方米PM2.;5的平均浓度每增加10微克，在长期的作用之下，肺癌导致的死亡率就会增加8%25。
- A new generation atmosphere diffusion model(ADMS model) and Regulatory model were used to forecast the average concentration values of H2S in a complex terrain of Chongqing. 应用新一代的大气扩散模型(ADMS模型)预测重庆某个复杂地形区域的H2S地面浓度,并分别将其与导则模型的预测值与实际监测值进行了对比统计分析。
- Organic matter, total nitrogen and total phosphorus in the sediments of aquatic-terrestrial ecotone in Taihu Lake were determined, with average concentration of 2. 测定了典型西太湖入湖河口区湖滨带中表层沉积物的有机质、总氮、总磷的含量,平均含量分别为2。
- Objective To study the relationship between the environmental instantaneous concentration(EIC) and time weighted average concentration(TWA) of silica dust in workplaces. 探讨生产场所矽尘环境瞬时浓度(EIC)与其时间加权平均浓度(TWA)间的关系。
- The average concentration of sewage bacteria (E.coli) in the central harbour in 1997 was about 12 000/100ml,little better than diluted effluent from a sewage treatment plant. This is a health hazard to any one who comes into contact with it often. 一九九七年，维多利亚港中部海水的含菌量(以大肠杆菌计)，平均约为每100毫升12000个，只较污水处理厂稀释后的污水稍好，对经常接触维港海水的人士构成健康危险。
- After precipitation passing through Larix gmelinii Plantations,the DO reduce gradually,the TURB and COND increase obviously. The ORP reduce gradually. The total average concentration of Na,Ca and Mg increase gradually. 大气降水经过林冠层后溶解氧含量降低,浊度和电导率明显增加,氧化还原电位逐渐降低,Na、Ca和mg离子总平均浓度逐渐升高。
- Threshold Limit Value-Time Weighted Average (TLV-TWA) is the time-weighted average concentration for a normal 8-hour workday and 40-hour workweek, to which nearly all workers may be repeatedly exposed, day after day, without adverse effect. 阈值极限-时间权重平均值(TLV-TWA)是对于正常的8小时工作日和40小时工作周的时间权重平均值，在该值下，大多数工人日复一日的重复暴露在其中而不会受到有害影响。
- The average concentration of sewage bacteria (E.coli) in the central harbour in 1997 was about 12 000/100ml, little better than diluted effluent from a sewage treatment plant. This is a health hazard to any one who comes into contact with it often. 一九九七年维多利亚港中部海水的含菌量(以大肠杆菌计)，平均约为每100毫升12000个，只较污水处理厂稀释后的污水稍好，对经常接触维港海水的人士构成健康危险。
- The average recovery and coefficient of variation of this method are 99.91% and 0.30% respectively, the square of linear correlation coefficient r~2 is 0.999 0, the average concentration of Bion 50% WG is 49.47%. 方法的平均添加回收率为99.;91%25;Bion 50%25WG的平均含量为49
- The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
- Note : 1, the maximum average concentration of planktonic bacteria law numerical brackets. 2, the concentration of bacteria measured the direct result of the settlement and not the result of planktonic Conversion Act. 注：1、浮游法的细菌最大平均浓度采用括号内数值。2、细菌浓度是直接所测的结果，不是沉降法和浮游法互相换算的结果。
- The average output of the factory is 20 cars a day. 该工厂的平均产量是每天20辆汽车。
