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In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主分的木质、全纤维、聚戊醣等分,则没有季节变化。

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This article summarized the research development of the reaction characteristic between lignin quinonoid chromophoric group and hydrogen peroxide.

概述了木醌型发色基团与过氧化氢反应特性的研究进展。

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The effect of organic expanders including humus acid, lignin,vio-lanthrone and isoviolanthrone on the performances of the lead-acid battery are described.

本文叙述了腐殖酸、木、紫蒽酮及异紫蒽酮作膨胀剂对蓄电池性能的影响.

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Moreover, it was shown that degradation of lignin was promoted by veratryl alcohol added, no effect of veratryl alco-hol on degradation of cellulose and hemicellulose was detected.

黎芦醇的加入对纤维的降解几乎没有影响,对半纤维降解的影响也不明显。

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The changes in chemical structure of residual lignin in reed kraft pulp after treatment with a white rot fungus,Panus conchatus have been investigated in the present paper.

从元,功能基含量,结构单元三种基团的比例和分子量及其分布等方面研究了生物降解纤维酶苇浆残余木的性质。

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That means the birch from high longitude and latitude areas will have lower content of the ash, extraction and lignin, higher content of the holocellulose and pentosan in the wood.

这表明,选择较高经纬度地区的白桦,可以降低灰分、抽出物、木含量,提高综纤维和聚戊糖含量。

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PBS趣味

Hardwoods used in BBQ smoke have lots of cellulose and lignin.

烧烤烟熏中使用含有大量纤维素和质素。

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PBS趣味

There's the lignin and cellulose of plants, calcium-rich shells of mollusks and coral reefs, and mineral bones like ours.

质素和纤维素,软体动和珊瑚礁富含钙贝壳,以及像我们这样骨骼。

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VOA Special 2018年3月合集

The chemicals remove about half of its lignin.

这些化学质去除了大约一半质素。

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PBS地球-动趣闻

The organic component of soil, called humus,   is mostly made up of broken down lignin.

土壤有机成分称为腐殖质,主要由分解质素组成。

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VOA Special 2018年3月合集

It is made by partially removing a natural polymer called lignin.

它是通过部分去除称为质素天然聚合制成

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英语学习系列1

OK, he says that the fungi break down the lignin and the cellulose. They break down the tree.

好吧,说真菌会分解质素和纤维素。们砍倒了树。

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PBS地球-动趣闻

Wood consists of cellulose fibers and a compound called lignin,   an organic polymer.

材由纤维素纤维和一种称为质素化合组成,质素是一种有机聚合

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经济学人 Science and technology

Stora Enso, a Finnish forest-products company, reckons it can make anode material from lignin.

芬兰林产品公司 Stora Enso 认为它可以用质素制造阳极材料。

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PBS趣味

And lignin is converted into all kinds of aromatic chemicals that flavor the meat, and can even act as chemical preservatives.

质素被转化为各种芳香化学质,给肉调味,甚至可以作为化学防腐剂。

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PBS地球-动趣闻

But scale trees only produced a small amount of lignin.

但是鳞片树只产生少量质素。

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经济学人 Science and technology

The plan is to develop ways of making anode carbon from lignin, a natural polymer found in the cell walls of plants.

该计划是开发利用质素制造阳极碳方法,质素是一种存在于植细胞壁中天然聚合

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英语学习系列1

They break down the lignin and the cellulose, which is the most resistant form of carbon, and they break it down, produce mushrooms.

它们分解质素和纤维素, 这是最耐腐蚀碳形式,然后将其分解, 产生蘑菇。

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TED-Ed(视频版)

The bark covering tree trunks is full of lignin, a rigid web of compounds that's tough to chew and highly impermeable to pathogens.

覆盖在树干上树皮充满了质素,这是一种坚硬化合网, 难以咀嚼,而且病原体极难渗透。

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VOA Standard 2015年8月合集

Velev and Ph.D. student Alexander Richter discovered that silver-based nanoparticles can be replaced with non-harmful nanoparticles based on an organic polymer called lignin, naturally found in most plants.

韦列夫和博士生亚历山大·里希特发现银纳米颗粒可以被无害纳米粒子所代替,它是一种名叫质素有机高分子,绝大多数植中都能够发现这种质。

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PBS地球-动趣闻

This tissue is what allows modern trees to grow tall and straight, because it contains lignin, a rigid organic polymer that gives the plant structural support.

这种组织使现代树能够长得又高又直,因为它含有质素, 一种为植提供结构支撑刚性有机聚合

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PBS地球-动趣闻

And back in the Carboniferous, many of the decomposing microbes that could break down the hardy lignin -- and release CO2 as a result -- had yet to evolve.

回到石炭纪,许多可以分解坚硬质素并因此释放二氧化碳分解微生尚未进化。

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《分钟地球》趣味

While wood is made up of the same nutritious carbohydrate called cellulose that makes up other tasty tree parts, most of the cellulose in wood is bound together by a complex molecule called lignin.

虽然材是由一种叫做纤维素营养碳水化合构成,这种碳水化合构成了其美味部分,但材中大部分纤维素是由一种叫做质素复杂分子结合在一起

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Scishow 精选系列

To avoid taking those extra steps, expert composters might add extra wood chips or paper products to the pile, since they have a lot of lignin — a tough component of plant cell walls which doesn't contain any nitrogen at all.

为了避免这些额外步骤,专业堆肥者可能会往堆肥中再加入一些屑或者纸质品,因为它们含有大量质素,一种完全不含氮坚韧细胞壁成分。

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《分钟地球》趣味

Insects like termites can go whole hog on the whole log, because they can " chew" the wood with their serrated mandibles AND also have the right gut machinery - AKA microbes - to break the lignin down on the molecular level.

像白蚁这样昆虫可以吃掉整根原,因为它们可以用锯齿状下颚“咀嚼” 材,并且还有合适肠道机制——也就是微生——在分子水平上分解质素。

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