经过大量试验合成了一种低毒改性脲醛树脂。
A kind of modified low toxic urea-formaldehyde resin was synthesized.
经过大量试验和现场测试证明这些理论是正确的。
The theory is proved to be correct through a lot of experiment and spot tests . There are two parts in this paper.
并对生产原理做了进一步探讨，经过大量试验找到最佳反应条件。
We further discusses the producing principle. After the massive experiments finding the best response condition.
经过大量试验，证实了用石灰烧结法处理富钾板岩生产钾铝产品的工艺是可行的。
After a lot of tests, it proves that it is feasible to produce potassium and aluminium products with potassium SLATE by lime sintering process.
经过大量试验研究，对磁悬浮轴承控制系统中选定比较电路，成功地将悬轴控制在设计范围内。
Through a great deal of tests and studies, comparative circuits for the control system of magnetic levitation axletree were chosen to control the levitation in the range of design.
我站在研究海排粉煤灰的基础上，经过大量试验，成功研制出了高掺量海排粉煤灰蒸养砖，并已投入生产。
Based on the tests, the article describes a new type of steam-cured brick with high-mixed fly ash from sea, which has been put into production.
经过大量的试验和计算分析表明，环境温度变化率和环境温度梯度对光纤陀螺零位漂移的影响大于环境温度对漂移的影响。
By large amount of experiments and calculations, the result shows the effects on FOG accuracy of temperature rate and its grads are greater than of only the temperature itself.
本文经过大量的调研和仔细的设计、完善，建成了具有空气分级、燃料再燃等多种用途的一维热态试验系统。
After a lot of survey and careful design work, a one-dimensional test system with multi-function such as air stage and fuel reburning is built up.
经过大量的有效试验，新型的多层滚筒式气流干燥机试验成功，成为各个干燥厂竞相选用的机型。
After many experiments, we have developed new-style multilayer air roller dryer and it has become the preferred model by many marigold plants.
经过大量的浮选捕收剂的试验研究工作，研制出的新型萤石浮选YF - 01捕收剂。
Based on the experimental investigation of the flotation collector, the YF-01 collector has been developed.
经过大量的试验证实这是一种可靠、准确、稳定的分割方法。
This method has been proved to be a kind of reliable, accurate stable segmentation method through numerous experiments.
本文通过大量试验和机理的研究，高速钢锻件经过反复镦拔。只能降低炭化物偏析度1～1.5级。
Adoption of speeded changing could reduce the degree of carbide segregation more than 3 grades whereas repeated upsetting and drawing-out could only reduce 1-1.5 grades.
本文通过大量试验和机理的研究，高速钢锻件经过反复镦拔。只能降低炭化物偏析度1～1.5级。
Adoption of speeded changing could reduce the degree of carbide segregation more than 3 grades whereas repeated upsetting and drawing-out could only reduce 1-1.5 grades.
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