The library writes off a certain quantity of books each year.
图书馆每年都注销一定数量的图书。
Is it enough to spend a certain quantity of hours in front of the PC to become an Internet addict?
投入一定数量的时间坐在电脑前成为一个网虫这有必要吗？
Air is a mixture of gases with a certain quantity of solids and usually some liquids mixed in.
空气是各种气体的混合物，其中也含有一定量的固体，也往往混有某些液体。
After anaerobic cultivation for a definite time, a certain quantity of sludge suspension was used for oxidation titration experiment.
经过一定时间培养后，取一定量的污泥悬液进行氧化滴定实验。
In case we come to an agreement, it would be necessary that you guarantee to place orders for a certain quantity every month because, only by this way, will a regular supply be ensured.
一旦达成协议，您必须保证每月订购一定数量，因为只有这样才能确保经常供应。
Printing traditionally has been defined as a technique for applying under pressure a certain quantity of colouring agent onto a specified surface to form a body of text or an illustration.
印刷传统上被定义为一种通过压力把一定量颜料施加上一特定表面，从而形成文本或图画的技巧。
Users are both the information demander and information provider, information quantity of the website can reach a certain level within a short time in this mode.
用户既是资源的需求者，同时也是提供者，以这种模式在短时间内就可以使网站的资源存储量达到一定的水平。
Doctors do agree on limiting a quantity of food, but they also insist on certain foods (but not on the total banishment of them) and a balanced diet.
医生当然同意限制进食食的量，但是他们也只是针对某些食物（但也不是完全不食）和建议均衡饮食。
Sometimes one sees in the school simply the instrument for transferring a certain maximum quantity of knowledge to the growing generation.
有时人们把学校看成仅仅是把尽可能多的知识传递给成长中的一代的工具。
A future is a contract to deliver or accept delivery of a specific quantity of a commodity by a certain date.
期货就是一个合约，这份合约规定在未来的确定日期交割确定数量的商品。
It should be pointed out that the results of mathematical statistics have a certain representation, but it is restricted by the quantity and quality of samples.
应该指出，数理统计的结果具有一定的代表性，但是这一结果受到样本的数目和质量的控制。
At present, the Inner Mongolian software park enterprise's quantity and the software industry have formed a certain scale, but comparing with the domestic advanced area, also have a big disparity.
目前，内蒙古软件园企业的数量和软件产业已形成一定规模，但同国内先进地区相比，还存在着较大差距。
The results show that an appropriate quantity of circulating water exists under certain conditions in the system and decreases with a reduction in the steam gas ratio of the shift reaction.
结果表明，系统在一定条件下存在一较为适宜的循环水量，且此适宜的循环水量随变换反应汽气比的降低而降低。
The exporter often promises in a firm offer to supply certain quantity of goods at a fixed price within a stated period of time.
出口商往往会对一定时间段，固定的价格和数量的货物报实盘。
In the world's huge quantity of circulating capital, there is a part of money under your name. The part of money is marked as the certain part for the work you did. That's the pay for your labor.
在世界巨大的流动资金里，可能有部分划归你的名下了，那是标记你做了其中某一部分工作，是你工作的报酬。
The results show that an appropriate quantity of circulating water exists under certain conditions in the system and decreases with a reduction in the steam gas ratio of...
结果表明，系统在一定条件下存在一较为适宜的循环水量，且此适宜的循环水量随变换反应汽气比的降低而降低。
For any healthy and stable ecosystem, a certain minimum quantity of water with proper quality is essential.
一定最低数量和适当质量的水对于任何健康、稳定的生态系统都不可或缺。
Generally fixed quantity prediction method has a certain deficit because of the case that predicts a time moving parameter system with fixed parameter model.
一般的定量预测方法因用固定参数模型预测一个时变参数系统的情况而致存在一定的局限性。
The result shows the coordinate action of a certain variety and quantity of mineral powder and emulsion powder effectively increases every performance of polymer cement mortar.
结果发现一定品种和掺量的矿粉与乳胶粉协同作用有效地提高了聚合物水泥砂浆的各项性能。
Only the different fields make joint efforts, could the youth of NEET return to the society smoothly, and prevent the increase of NEET quantity to a certain extent.
只有各方面共同努力，才能使NEET族青年顺利地回归社会，并在一定程度上预防NEET族群体数量的增加。
Solubility: Solubility of a substance in a certain solvent is defined to be the maximum amount of the substance which will dissolve in a given quantity of the solvent.
溶解度：在一特定的溶剂中，一物质的溶解度定义为：此物质溶解在一已知的溶剂之最大量。
But if the quantity present in measure exceeds a certain limit, the quality corresponding to it is also put in abeyance.
但如果某一质量统一体或尺度中的量超出了某种界限，则和它相应的质也就随之被扬弃了。
With a certain assumption, we conclude that the relationship between price level, quantity produced and cost parameter is same at both extreme levels of risk avoidance.
在成本参数服从均匀分布以及逆需求函数为线性的特定假设下，认为两种极端风险态度下管制价格、生产产量与成本参数的相关性是相同的。
A evolving learning model of data mode based on artificial immune theory and algorithm is proposed. A method for making certain the quantity of antibody population or detectors in reason is presented.
提出了一种基于人工免疫的数据模式进化学习模型及其相应的算法，给出了抗体(检测器)群体合理数量的确定方法。
For example, the cost of a footing of a certain type and size may be found in commercial publications on cost data which can be used to facilitate cost estimates from quantity takeoffs.
例如，某类房屋某种基础的成本可以从某些商业出版物中找到其单价，再根据工程量就可以算出成本。
Total quantity control means limiting measures that are formulated for total allowable emissions quantities of air pollutants within a certain area in order to effectively improve air quality.
总量管制：指在一定区域内，为有效改善空气品质，对于该区域空气污染物总容许排放数量所作之限制措施。
Benzoy Peroxygen (BPO) is the solid brightener which is allowed to be used by our country in the flour processing. However, the quantity should be limited strictly to a certain degree.
过氧化苯甲酰（简称BPO）是我国允许在面粉中添加的固体增白剂，使用时必须严格限量。
She had a quantity of light chestnut hair, a good figure, a dazzling complexion, and a certain languid grace which passed easily for gentle-womanliness.
她有着一头浅栗色的头发，体形漂亮，皮肤光彩照人，还有几分慵懒的优雅，这点很容易被看作是女性的温柔。
The main results were as follows:1. N, K affected pumpkin's growth. In a certain range, plant growth increased when the quantity of fertilizer increased.
在一定的范围内，随氮、钾肥料施用量的增加，西葫芦植株的株高、茎粗及根、茎、叶的鲜重均增加。
The main results were as follows:1. N, K affected pumpkin's growth. In a certain range, plant growth increased when the quantity of fertilizer increased.
在一定的范围内，随氮、钾肥料施用量的增加，西葫芦植株的株高、茎粗及根、茎、叶的鲜重均增加。
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