alder 是什么意思
n. [林] 桤木
alder 中文词源
alder 桤木
来自PIE *el, 树名。
英语词源
alderalder: [OE] Alder is an ancient tree-name, represented in several other Indo-European languages, including German erle, Dutch els, Polish olcha, Russian ol’khá, and Latin alnus (which is
alder 权威例句
- 1. Modification for synthetic purposes on the Diels - Alder adducts 56 and 62 has only rarely been considered.
- 为了达到合成的目的,对Diels-Alder加 成物(56)和(62)加以改造的问题很少有人考虑.
来自辞典例句
- 2. Diels — Alder reaction is one of the important research content in the fields of organic chemistry.
- Diels—Alder反应是目前有机化学领域重要研究内容之一.
来自互联网
- 3. Activated olefinic bond Amine, thiol radical initiator, cationic initiator, dienes ( Diels - alder reactive ).
- 活性烯键胺, 巯基,引发剂, 阳离子引发剂, 烯烃 ( 的Diels-Alder反应 ).
来自互联网
- 4. They were principally used to catalyze aldol, allylation, Diels - Alder, ene and Friedel - Crafts reactions.
- 它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应.
来自互联网
- 5. Diels - Alder reaction of 2 - merhylene - 1 - pheny 1 - 1.3 - butanedione catalysed by zinc chloride as lewis acid with 1.3 - cylcopentadiene was reported.
- 以氯化锌为路易斯酸催化剂,探讨了2 ─ 亚甲基─1 ─ 苯基 ─ 1.3 ─ 丁二酮与1.3 ─ 环戊二烯的Diels─Alder反应.
来自互联网
alder 造句
- 1. Even with snow on the ground, the high bushy understory is exposed; also snow and wind bring down leafy branches of cedar, hemlock, red alder, and other arboreal fodder.
- 即使地上有雪，高而浓密的下层植被也显露出来；雪和风也会吹落雪松、铁杉、红桤木多叶的树枝和其他的树木草料。
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- 2. He has captured pollen from alder, pine, and willow.
- 他从桤树、松树和柳树上捕捉到了花粉。
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- 3. He has also captured pollen from alder, pine and willow.
- 他还从桤树、松树和柳树上采集了花粉。
youdao
- 4. He gave John some alder bark.
- 他给了约翰一些桤木树皮。
youdao
- 5. More tall and stately that the alder.
- 你比桤木还要高挑和端庄。
youdao
- 6. Alder trees belong to the birch family.
- 赤杨属于桦木科。
youdao
- 7. Cedar or alder are traditional, but maple is nice too.
- 雪松或桤木是传统的，但枫是太漂亮。
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- 8. The chapel's inner walls are made of thick oiled alder planks.
- 礼拜堂的内墙由木板材制成。
youdao
- 9. Michael Licosati, a founder of Alder Capital, bought shares in Rino.
- 阿尔德资金创始人，入了绿诺科技的股份。
youdao
- 10. In the battle of the trees, the Alder fought in the very front line.
- 在树木的战役中赤杨战斗在第一线。
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- 11. Several coppice plantations have been seeded with poplar willow and alder.
- 好几个灌木林场都种上了白杨、柳树和赤杨。
youdao
- 12. When they reach the destination, Alder stopped the car and let her go down.
- 到了那个女生所说的地方时，阿德就停车好让她下车了。
youdao
- 13. Several coppice plantations have been seeded with poplar, willow and alder.
- 好几个灌木林场都种上了白杨，柳树和赤杨。
youdao
- 14. Several coppice plantations have been seeded with poplar, willow, and alder.
- 好几个灌木林场都种上了白杨、柳树和赤杨。
youdao
- 15. Its name is Ben Alder, it is a wild, desert mountain full of hills and hollows.
- 它的名字是本·亚尔德，是一座尽是些山岗和鸡谷的漠无人烟的荒山。
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- 16. The meanders of a prattling brook, were shaded with straggling willows and alder trees.
- 一条小河蜿蜒掩映在稀疏的柳树和桤树的树荫间，淙淙作响。
youdao
- 17. Objective To explore the effect of exercise on the physical and mental health alder population.
- 目的探讨健身锻炼对老年人生理及心理健康的影响。
youdao
- 18. There he soon died, and it is strange to reflect that he may have regretted his Cage upon Ben Alder.
- 没多久，他就死在那，想想也奇怪，说不定是他对本·亚尔德山上的“笼子”曾经是依依不舍呢。
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- 19. As the experiment result, optimal treatment parameters were obtained which could be used to prepare Alder WPC ef...
- 提出了较为理想的西南桤木木塑复合材处理工艺参数，能初步实现西南桤木木塑复合材的有效制备。
youdao
- 20. As the experiment result, optimal treatment parameters were obtained which could be used to prepare Alder WPC efficiently.
- 提出了较为理想的西南桤木木塑复合材处理工艺参数，能初步实现西南桤木木塑复合材的有效制备。
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- 21. The wood properties of alder is similar to that of poplar and birch which could be used to produce different kinds of pulp.
- 就桤木商用种植的生产潜力、制浆造纸和材性研究现状等进行综合评述。
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- 22. I pointed to where our village lay, on the flat in-shore among the alder-trees and pollards, a mile or more from the church.
- 我把我们村子的位置指给他看。村子就坐落在距离教堂一英里多远的平坦河岸上，四周矗立着赤杨树和截梢树。
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- 23. Down yonder little glen the shrubs are drooping under their burden, and the red alder berries contrast with the white ground.
- 在那边小小的山凹之中，灌木已经累累结实，红色的浆果同白色的雪地相映成趣。
youdao
- 24. Exploring the woodlands on a warm summers evening, he spotted this lone caterpillar delicately balanced on the stem of a black alder leaf.
- 在一个温暖夏天的夜晚他探究森林，发现一条孤零零的毛毛虫微妙的平衡在一个黑色桤木叶的茎上。
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- 25. In midmost of the stream, embraced in the weir's shimmering arm-spread, a small island lay anchored, fringed close with willow and silver birch and alder.
- 在大坝那闪光的臂膀环抱中，安卧着一个小岛，四周密密层层长着柳树、白桦和赤杨。
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- 26. Mixed alder and cypress forest is a main mixed type on purple soil, playing an important role in the construction of protection forests in the Changjiang River basin.
- 桤柏混交林是紫色土的主要人工混交类型，在长江防护林建设中有重要作用。
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- 27. Mixed alder and cypress forest is a main mixed type on purple soil, playing an important role in the construction of protection forests in the Changjiang River basin.
- 桤柏混交林是紫色土的主要人工混交类型，在长江防护林建设中有重要作用。
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美：['ɔldɚ]