起始的

A new synthesizing route for ethyl-2-(p -ethoxyphenyl) propenoate preparation was proposed, in which, the ethyl-2-(p-ethoxyphenyl) propenoate was synthesized from phenetole via Friedel-Crafts reaction and Wittig G reaction.

设计了一条以苯乙醚为起始原料，经过Friedel-Crafts反应、WittigG反应合成2-对乙氧基苯基丙烯酸乙酯的新路线。

It can be used as an environment-friendly intermediate and starting material for organic synthesis substituting the poisonous phosgene and dimethyl sulfate in carbonylation and methylation reaction.

它可以代替剧毒的光气和硫酸二甲酯作为环境友好有机合成中间体和起始物质，应用于羰基化和甲基化反应中。

Soybean powder phosphatide was hydrolyzed by phospholipase A_1,and the optimum conditions were investigated.

利用磷脂酶 A1对大豆粉末磷脂进行水解，通过实验确定了大豆粉末磷脂酶解的最佳反应条件为：反应时间9 h，反应温度50℃，起始pH 5.1。

In addition, the starting address of the physical extent on the physical media is specified here.

另外，物理媒体上物理范围的起始地址也在这儿指定。

This is a salutary new point of departure in the history of Chinese art.

这在中国艺术史上是一个新的文明起始点。

You can use the starting point to create additional sequence beams that will allow your program to run simultaneous tasks.

可以由起始点再额外建立一个程序轴，使你的程式同时执行两件工作。

ligating the basilar artery trunk might induce pons and part of superior medulla focal ischemic damage.

结扎基底动脉起始部可以引起延髓上部和脑桥的局灶性缺血性损伤。

Therefore, grade III CT signs were unequivocally predictive for type 1 MCA occlusion.

因此，III级早期CT征象（整个豆状核区均出现低密度）可以明确地提示：大脑中动脉主干的起始段发生了闭塞（1型大脑中动脉闭塞）。

Using this optimal medium, the relation between consuming oxygen quantity, primely pH value, culture time and hyphal growth rate was studied.

同时探讨了在此配比下，耗氧量、起始pH值及培养时间对菌体产量的影响。

GA3 and Z can promote germination of American ginseng seed, but cannot ignite the development of proem bryo.

结论GA3和Z是西洋参种子萌发促进因子，而不能启动原胚的起始发育。

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。