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

子量的聚丙交酯主要由丙交酯开环聚制备。

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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.

丙交酯是由乳酸制备聚乳酸的中,产率偏低是制约聚乳酸大规模应用的关键

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CRI在线 2025年4

The PLA deployed the Shandong Aircraft Carrier task group to simulate strikes on ground and maritime targets.

解放军部署了山东航空母舰任务组,模拟对地面和海上目标打击。

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CRI在线 2015年8

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聚乳酸(PLA)制成

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CRI在线 2023年6

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

他表示,解放军空军按照规定对飞机进行了监控。

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中高级英语短文

Army units from the PLA Western Theater Command swiftly prepared for emergency response.

解放军西部战区司令部部队迅速做好应急准备。

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VOA Special 2016年1

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

《解放军报》称国有企业一态度可能会对退役军人造成伤害。

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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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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作开发一种基于CBD药物,用于治疗创伤后压力。

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CRI在线 2019年5

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

作为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.

我花了一个时间用原生树脂做实验种材料非常坚硬、粗糙、易折。

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CRI在线 2015年5

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

教育部表示,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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问答进行中

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

但它们是由一种名为 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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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,但他们实际上是解放军军官。

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VOA 常速 2016年2

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,他说科学家发现能比以前更快速、廉价生产PLA办法。

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导演对谈

He chose to make each different pla, each different biome, each different culture have their own planet, distributed around the galaxy.

他选择让每个不同解放军每个不同生物群系、每个不同文化都有自己星球,分布在银河系各处。

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VOA 常速 2016年2

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,比如基于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

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3D打印机,而且适制造缝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,两个人都戴着解放军棉帽正面缝着一颗红星。

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