This paper studies ultrasonic esterification, it was found that, esterification with ultrasonic ware has method simplification, condition tempered and yield high, which is a significant way.
报导了超声酯化反应的研究结果。研究发现，在超声辐射下进行酯化反应。方法简单，条件温和，产率高，是一种值得注意的新方法。
Conclusion: The new method has several advantages such as cheap reactants, facile reaction condition, convenient operation and high yield.
结论：新工艺原料价廉易得，反应条件温和，后处理简便，收率高。
The method supplies an approach of high yield to synthesize maleopimaric acid from gum rosin of pinus massonina under more mild condition.
该方法开辟了在较缓和条件下，从脂松香制备高得率马来海松酸的途径。
The study indicates that the effect of summer corn water saving and yield increasing is obvious evident which is theoretical base of crop high yield under the water saving condition.
研究结果表明：秸秆覆盖条件下夏玉米节水和增产效果明显，并为节水条件下的作物高产提供了理论根据。
Under this condition, the pulp with high yield (91%) and high brightness (87.76% ISO) was obtained and more than 90 percent of the fluorescence substance in cotton linter pulp was removed.
在此条件下，可以得到高得率(91%)、高白度(87.76%ISO)的纸浆，棉浆中荧光的脱除率达到了90%以上。
The variety of equation type and multiple spike type were more economic than weighty spike type under general production condition, and easily got high and stable yield.
但在目前的生产条件及生产水平下则是以均衡型、多穗型品种较为经济，且易获得高产稳产。
In the condition of high yield cultivation, especially with enough organic fertilizer, short-stem and heavy-ear cultivar and precision sowing could be used to get high yield.
在高产栽培条件下，特别是有机肥充足的条件下，采用矮秆重穗型品种，实行半精量播种，同样可以获得高产。
This technique showed many advantages: low reaction temperature, mild reaction condition, high yield and purity, which was possible to replace acetic anhydride method to produce HMX.
该方法反应温度低、条件温和、产率高、产品纯度好，有望代替传统的醋酐法制备HMX。
In the condition both the yield and purity of isooctyl nitrate are very high. The method is safe and reliable. and suits to chemical production.
在该条件下制得的硝酸异辛酯收率和纯度都比较高，方法安全可靠，适用于化工生产。
The preparation method of the invention is of simple operation with moderate condition and high reaction yield and with great market potential, thus is easy to be industrialized.
本发明所采用的制备方法具有操作简便、条件温和、反应收率高的特点，易于工业化，具有较高的市场潜力。
Phase transfer catalysis is hot point now because of its merit of temperate react condition, quick react rate and high production yield.
由于相转移催化具有反应条件温和、反应速度快、反应收率高等优点，使其成为研究的热点。
The last two methods were sensible for there simple industrial art, moderate operating condition and high yield.
其中后两种方法工艺简单、操作条件温和且产物收率高 ，是较合理的合成路线。
Therefore, combining high protein with high yield can be realized under some condition instead of any condition.
因此，高蛋白与高产的结合是有条件的，而不是在任何条件下都能实现二者的结合。
Effects of different spacing form, density on structure of population, light distribution and yield of phaseolus vulgaris were studied under the high yielding condition.
研究了在高产条件下，不同行距配置、密度对奶花芸豆群体冠层结构、光能分布与利用特性及产量构成的影响。
The results showed that three variety types could all achieve high yield under given production condition and cultural practices.
结果表明，在一定的生产环境和相应的栽培技术下，三种类型品种都能获得高产。
The influence of environmental condition and cultivation measures on the yield and quality of high-starch maize can lead the underdevelopment of the advantages of variety and affect the large spread.
高淀粉玉米产量及品质由于受环境条件和栽培措施的影响，而导致品种优势得不到发挥，影响大面积推广。
The synthesization has short route and mild reaction condition; and the produced intermediate and final product has high yield and high purity.
该合成路线短，反应条件温和，所得中间体、最终产物的产率高、纯度高。
The realization of crop super-high yield is the interactive result between varieties with super-high yield and the suitable cultivation condition in the favorable ecological areas.
作物超高产是具有超高产潜力的品种在一定生态区域和栽培条件下诸多因素和谐互作的结果。
The optimum condition is found. The purity of the product is as high as 95%. The once-through yield is 25%.
优化出最佳工艺条件，生产出纯度达95%，单程收率达2 5.5%的优质液蜡产品。
The adaptability of hybrids type characteristic with the ecological condition in maize high yield developing has been discussed in this paper with the maize breeding practice.
结合育种实践论述了玉米高产开发中品种类型特性与生态条件的相互适应性。
The results of varietal comparative test show that leaf lettuce varieties, 9547 and 9542, are characterized by the strong growth, late bolting and high yield under the condition of high temperature.
品比试验的研究结果表明，9547与9542具有高温下长势旺、不易抽薹且产量水平较高的特性。
It features easily available raw materials, low equipment condition, stable operation, short reaction time, and high yield.
具有原料易得、设备要求低、操作条件平稳、反应时间短、收率高等优点。
The preparation method has the advantages of moderate reaction condition, easy controlling of the reaction process, easy separation as well as purification of the products and high yield.
本发明的制备方法具有反应条件温和，反应过程易于控制，产品易于分离提纯且收得率高的优点。
Effects of different spacing form, density on structure of population, photosynthesis and grain yield of Lankao906 were studied under the high yielding condition.
研究了在高产条件下，不同行距配置、密度对兰考90 6群体结构、光合及产量的影响。
An optimum planting density must be employed to get a high yield, depending upon soil condition, varietal tillering ability, fertilizer level, number of plants per hill, and planting season.
获得高产必须采用最适植株密度，视土壤条件、品种分蘖力、肥力水平、每蔸苗数和播种季节而定。
An optimum planting density must be employed to get a high yield, depending upon soil condition, varietal tillering ability, fertilizer level, number of plants per hill, and planting season.
获得高产必须采用最适植株密度，视土壤条件、品种分蘖力、肥力水平、每蔸苗数和播种季节而定。
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