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High molecular weight PLA can be prepared by ring-opening polymerization of lactides.

高分子量的聚主要开环聚制备。

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Lactide is the midbody for the preparation of poly(lactic acid), the ratio of lactic acid to lactide is low and hamper the extensive application of PLA.

乳酸制备聚乳酸的中间体,其产率偏低制约聚乳酸大规模应用的关键。

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CRI在线 2015年8月合集

Another deputy PLA's Logistics Department is also under investigation.

另一位解放军总后勤部原副部长也在接受调查。

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VOA常速英语_美洲

They are made of poly lactic acid known as PLA from corn starches.

它们是由玉米淀粉中提取出聚乳酸(PLA)制成

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CRI在线 2023年6月合集

He says the PLA air forces monitored the aircraft in accordance with regulations.

,解放军空军按照规定对飞机进行了监控。

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老友记第一季(精校版)

Do you have a plan? -Phoebe: I don't even have a 'pla'.

你有计划吗?-我连计都没有。

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VOA Special 2016年1月合集

The PLA Daily newspaper said state-owned companies should not take actions that may hurt the former soldiers.

《解放军报》称国有企业这一态度可能会对退役军人造成伤害。

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经济学人(汇总)

But Hanma has teamed up with the PLA to develop a CBD-based drug to treat post-traumatic stress.

但是悍马物流已经和PLA合作开发一种基CBD药物,用治疗创伤后压力。

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CRI在线 2019年5月合集

The PLA Navy has always played an active role as an important force in maintaining world peace.

维护世界和平一支重要力量,咱们人民海军自始至终在发挥着积极作用。

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TED-Ed(视频版)

And I spent a month or so experimenting with PLA, which is a hard and scratchy, breakable material.

我花了一个月时间用原生树脂做实验。这种材料非常坚硬、粗糙、易折。

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问答进行中

But they're straws made out of this organic plastic called PLA.

但它们是由一种名 PLA 有机塑料制成吸管。

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《金融时报》 Podcast

Of course, the PLA navy has a huge number of submarines and surface vessels.

当然,解放军海军拥有数量庞大潜艇和水面舰艇。

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CRI在线 2015年5月合集

Authorities say around 5-thousand PLA veterans who study in college will be admitted to graduate schools each year under the program.

教育部,每年安排5000人以内专项计划,面向退役大学生士兵招生。

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三体 I

If the latter two were armed police, that would be somewhat understandable, but they were actually PLA officers.

如果后两人是武警,那也有些可以理解,但们实际上是解放军军官。

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VOA 常速 2016年2月合集

Michiel Dusselier, a researcher at the University of Leuven, said scientists have found a way to manufacture PLA faster and cheaper than before.

Michiel Dusselier是卢汶大学一名研究员,说科学家发现能比以前更快速、廉价生产PLA办法。

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VOA 常速 2016年2月合集

There are environmentally friendly alternatives like polylactic acid plastic, or PLA, based on sugar from maize and sugarcane -- but they are more expensive.

目前有环境友好型替代品,比如基玉米和蔗糖中糖分制成聚乳酸塑料(PLA)。

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VOA 常速 2016年2月合集

PLA is one of the few types of plastic suitable not only for 3-D printers but for some biodegradable medical items such as suture threads.

PLA是少数不仅适合3D打印机,而且适合制造缝合线等可生物降解医疗用品塑料材料之一。

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三体 I

But unlike her, both of these men had on the cotton cap of the PLA, a red star sewn onto the front.

但与她不同是,这两个人都戴着解放军棉帽,正面缝着一颗红星。

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《环球时报》阅读精选

The tears coursed down his cheeks when Zeng Jiafu, 22, finally met with the PLA soldier who took him out of that tough time at the ceremony of new recruits.

当 22 岁曾家福在新兵入伍仪式上终见到带领走出艰难时期解放军战士时,眼泪夺眶而出。

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《环球时报》阅读精选

Lang Zheng, a 3-year-old boy famous around China and even the world for saluting his PLA rescuers from the rubble of the earthquake, now enjoys a happy childhood in school.

郎政,一个因在地震废墟中向解放军救援人员致敬而闻名全国乃至世界3岁男孩郎政,如今在学校里度过了一个快乐童年。

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