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The latter is hydrolyzed in the acidic conditions, then the recovered copolymer of EO and glycidol with multi pending hydroxymethyls is esterified with 2-bromoisobutyrylbromide to produce the ATRP macroinitiator with multi pending bromoisobutyryl groups .

共聚物poly的羟基与2-溴异丁酰溴进行酯化反应，得到侧链挂有2-溴异丁酸酯基结构的可以用于原子转移自由基聚合体系的大分子引发剂Poly_

Both star copolymer precursors are hydrolyzed in the acidic conditions, then the corresponding recovered star copolymers of EO and glycidol with multi pending hydroxylmethyls are esterified with 2-bromoisobutyryl bromide to produce the ATRP macroinitiators with multi pending bromoisobutyryl groups . Then the latters initiate the polymerization of styrene to form the corresponding amphiphilic three- and four-arm star PEO-g-PS.

在阴离子共聚EPEE单体和环氧乙烷单体的过程中，通过变换引发剂体系中的醇的结构(由原来的二元醇变成多元醇，如三羟甲基丙烷和季戊四醇)，合成了星形结构的共聚物，通过水解反应脱去保护基团后，再与2-溴异丁酰溴反应，得到链的侧端挂有很多2-溴异丁酸酯基的星形大分子引发剂，通过ATRP聚合机理引发苯乙烯聚合得到PEO为主链，PS为侧链的星形一接枝共聚物。

Degradation test in vitro was carried out in phosphate buffer solution (0.1M, pH7. 4) at 37 ℃. The buffer solution was changed daily. Degradation test in vivo was implanted the sample to subdermal in adult ICH rat in the scapular area lateral to the dorsal midline. At suitable time the samples were recovered. Molecular weight changes in surface layer and bulk of polymer sample were measured by GPC and weight loss was determined gravimetrically. It was found that the degradation behavior can be regulated by changing the composition of copolymers. The critical compositions from surface to bulk degradation behavior for PGCA, PLCA, PLMCA, PLDCA systems were 15-20, 20-30, 30- 40, 40 of mol percent GA or LA unit in copolymers, respectively. The degradation behavior of PGCA, PLCA, PLMCA, PLDCA systems were compared and analysed. Some factors influencing the degradation character, such as copolymer composition, hydrophobicity, crystallinity and enzyme affect etc. played important role.

体外实验中材料降解环境为37℃，0.1M，pH7.4磷酸缓冲溶液，每天换液，定期取样；体内实验中将聚合物试样埋置于ICH小白鼠背部肩胛骨皮下部位，定期处死小鼠，取样，将体内体外样品进行重量损失及试样内外层分子量变化测定，分析各聚合物试样降解行为特性，实验结果证明，改变共聚物组成，可以调节各聚合体系降解行为特性，对PGCA，PLCA，PLMCA，PLDCA共聚体系，交酯摩尔百分含量15-20％，20-30％，30-40％，40％分别为各体系内降解行为特性由表面降解型向本体降解型过渡的临界转折点，交酯含量较低的聚合物不同程度地表现表面降解行为特性，论文对各共聚体系体内外降解行为作了分析对照，例如共聚物组成对材料降解速度与降解行为的影响；生物体内酶对降解行为的影响；材料亲疏水性，聚合物链段结晶行为及碳酸酯结构对材料降解行为的影响等，得出交酯/环碳酸酯共聚体系降解行为一些共性和规律。

Grun., were found for the first time in the lakes of Jiuzhaigou in traveling season, and they disappeared in winter, indicating that human activities had impact on the lakes of Jiuzhaigou, and the ecological system had a strong ability to be recovered by itself.

Grun。在旅游旺季出现，并在淡季消失，表明旅游对九寨沟核心景区的湖泊产生了一定的影响，而其生态系统具有较强的自我调节功能。

Results: Four patients suffering from sudden dyspnea were subjected to emergency tracheotomy: of them, one patient died, one suffering from coma secondary to cerebral hernia and edema resumed sensation but regained hemiparalysis, and 2 were fully healed. The other three suffering from dyspnea of 2 to 3 degrees recovered after an intensive monitoring and a large dosage of steroid.

结果：7例患者中4例突发呼吸困难加重行紧急气管切开，其中死亡1例，发生脑疝脑水肿昏迷1例，经综合治疗神志恢复，遗留偏瘫，另外2例痊愈；其他3例发生2 3度呼吸困难，经严密监护观察，大剂量应用激素治愈。

The most common isolates were α-hemolytic streptococcus, Hemophilus influenzae, Streptococcus pneumonia, coagulase-negative Staphylococcus, and Staphylococcus aureus. Anaerobes were recovered from 7.9% of all isolates.

最常见的菌种依序是α-hemolytic streptococcus，Hemophilus influenzae，Streptococcus pneumonia，coagulase-negative Staphylococcus以及Staphylococcus aureus，厌氧菌则占所有菌株的7.9%。

I try my best to historize the poetry and poetry theory of the school of nine leaves'. I put them back into the relations of the specific society and history, when they came into being, and recovered the initial significance in the specific historical context.

笔者尽可能地将九叶诗派的诗与诗论不断&历史化&，即将其置回其产生时的特定的社会及历史的关系中去，复原其在特定历史上下文中的初始意义。

The voice was that of one of his precious, custom-built IG 100-series MagnaGuards: prototype self-motivating humaniform combat droids designed, programmed, and armed specifically to fight Jedi."We recovered a lightsaber from the base of the turbolift shaft before the spire tore free."

这个声音来自于他的其中一个法宝，自制的IG-100系列马戈纳卫兵：典型具有自我激活功能的人类形态战斗机器人，其设计、编程和武装皆是针对与绝地的战斗，&我们在指挥塔与船体分裂前在电梯井底找到了一把光剑。&

Before metallic zinc can be recovered, by using either hydrometallurgical or pyrometallurgical techniques, sulphur in the concentrate must be removed.

在金属锌被提取之前，首先必须采用湿法冶炼或火法冶炼技术除去精矿中的硫。

The combination of physical and chemical cleaning was performed on the cleaning of fouled membrane. After aeration for 2 hr, 400 mg/L sodium hypochlorous cleaning for 2 hr, and then 200 mg/L sodium hypochlorous marinating for 20hr, the specific membrane flux recovered to 81.51%.

对污染膜组件的清洗采用物理清洗与化学清洗相结合的形式，空曝2小时、400ppm次氯酸钠清洗2小时、200ppm次氯酸钠溶液浸泡20小时后膜比通量恢复至81.51%。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。