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One L-isoleucine high-producing strain ISW330 with genetic marker was screened through shake tube primary screening, shake flask compound screening, genetic marker test and single clone isolation and continuous passage cultivation This strain could produce L-isoleucine 9.18g/L after fermentation under the fermentation condition without being optimized.

以黄色短杆菌HL41为出发菌株，通过硫酸二乙酯和紫外线诱变处理，经摇管初筛、摇瓶复筛、遗传标记验证、单菌落分离和连续传代，筛选出一株L-异亮氨酸生产菌株ISW330(Met~-+AEC~r+α-AB~r)。

One L-glutamic acid high-producing strain TN6319 with genetic maker (FEA~r+KMA~r+SG~r ) was screened through shake tube primary screening ,shake flask second screening,genetic marker test and single clone isolation and continuous passage cultibation.this strain could produce L-glutamic 72.9g/L after fermentation 42h under the fermentation without being optimized.

经摇管初筛、摇瓶复筛、遗传标记验证、单菌落分离和连续传代，最终筛选出一株L-谷氨酸高产菌TN6319(氟乙酸~r、酮基丙二酸~r、谷氨酰胺~r、磺胺胍~r)，该菌株在未优化条件下发酵42h产L-谷氨酸79.2g/L。

The method comprises: adding 4-(3,4-dichlorophenyl)-1-tetralone and solvent at a ratio of 1:(3-4) into a three-necked flask with a stirrer, heating under stirring until 4-(3,4-dichlorophenyl)-1-tetralone is completely dissolved, heating to 60-100 deg.C, refluxing for 0.5-2 h, cooling the filtrate to -5-10 deg.C, filtering, recrystallizing to obtain refined 4-(3,4-dichlorophenyl)-1-tetralone, and drying at 40-80 deg.C to obtain dry 4-(3,4-dichlorophenyl)-1-tetralone.

该方法的步骤是：在带搅拌的三颈瓶中依次加入4-(3，4-二氯苯基)-1-萘满酮和溶剂，溶剂与4-(3，4-二氯苯基)-1-萘满酮的L∶W为3～4∶1，将上述4-(3，4-二氯苯基)-1-萘满酮及混合精制溶剂搅拌下升温，使4-(3，4-二氯苯基)-1-萘满酮全部溶解，升温至60～100℃，回流0.5-2h；滤液用冰水冷却至-5～10℃，过滤，所得物料再用上述方法进行一次重结晶得到精品4-(3，4-二氯苯基)-1-萘满酮，40～80℃干燥后即得到干品4-(3，4-二氯苯基)-1-萘满酮。

A COMPARATIVE STUDY ON KINETICS OF ION EXCHANGE IN BINARY SYSTEM FITTED BY THREE MODELS$$$$SONG YINJIE;ZHAO AIMIN（Department of Modern Physics, Lanzhou University,730000）ABSTRACT A"three-necked flask"technique is employed for the study of the kinetics of H~--UO ionexchange system with strong acidic cation exchange resin.

文章以强酸性阳离子交换树脂作交换剂，用三颈瓶法研究了H￣＋UO￣＋离子交换反应动力学。

Cronus poured a drink from a thick-necked flask and set it before himself, then poured a second for Mark.

/ 克罗诺斯倒了一种饮料从一厚的-拥抱细颈瓶而且在他自己之前设定了它，然后为马克倒秒。

Place the filter,which has been previously dried and weighed,on the suction flask and apply suction.

把事先弄干并称重的过滤器放到吸滤瓶上并开始用来吸。

Place the filter,which has been previously dried and weighed,on the suction flask and apply suction.

将预先干燥并称重的过滤片置于抽吸瓶口并加以抽吸。

At last, on the basis of research results above, several sets transmission housings were made successfully by core assembly process and snap flask molding process, all the processes were completed within two weeks, including master patterns design, numerical simulation, SL patterns fabrication and sand casting.

将上述研究成果应用于变速箱壳体的快速砂型铸造，通过组芯造型与活砂造型这两种复杂造型方法，成功完成变速箱壳体的小批量试制；整个过程历时两周，完成从CAD模型的设计修改、SL原型制造以及砂型铸造的所有工作，充分验证了SL原型应用于砂型铸造的可行性，降低了复杂壳体类零件响应市场的时间。

Also found among the Belitung treasures was this intricately engraved gilt silver flask.

这个精致雕刻的镀金银瓶也是发现于勿里洞岛财宝之中。

On the optimum conditions a natamycin production of 6.87g/L could be reached in the shake flask culture after 120 h cultivation, which was 84.7% higher than that of cultivations without precursor addition.

在此条件下摇瓶分批发酵生产纳他霉素的产量可达到6.87g/L，比未添加前体的纳他霉素产量(3.72g/L)提高了84.7%。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。