查询词典 timber floating

In 1831 Mr. Patrick Matthew published his work on "Naval Timber and Arboriculture," in which he gives precisely the same view on the origin of species as that propounded by Mr. Wallace and myself in the "Linnean journal," and as that enlarged in the present volume.

1831年，帕特里克·马修先生发表了《造船木材及植树》的著作，他在这部著作中所明确提出的关于物种起源的观点同华莱士先生和我自己在《林纳学报》上所发表的观点以及本书所扩充的这一观点恰相吻合。

Therefore, the timber aridity have the important meaning with economic flourish all to the social advance.

因此，木材干燥对社会的进步和经济的繁荣都具有重要的意义。

Near the end of March, 1845, I borrowed an axe and went down to the woods by Walden Pond, nearest to where I intended to build my house, and began to cut down some tall, arrowy white pines, still in their youth, for timber.

一八四五年三月尾，我借来一柄斧头，走到瓦尔登湖边的森林里，到达我预备造房子的地方，就开始砍伐一些箭矢似的，高耸入云而还年幼的白松来做我的建筑材料。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tiles, slates, asbestos cement, tar felt, asphalt, lead, copper , zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tile s, slates, asbestos cement, tar felt, asphalt, lead, copper, zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tiles, slate s, asbestos cement, tar felt, asphalt, lead, copper, zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

Hebei use of state-owned forest primeval forest, as well as Russia's high-quality Ash tree, birch, poplar, oak for the production of raw materials, with a production history of more than 10 years old timber processing enterprises.

采用鹤北国有林区以及俄罗斯原始林的优质树种水曲柳、桦木、杨木、柞木为生产原料，是一家具有10多年生产历史的老牌木材加工企业。

The research theoretically founded the strategy of establishing DNA bar-coding database of bark beetle from imported timber,so as to improve the level of bark beetle species identification.

该研究为进境原木易携带小蠹虫DNA条形码数据库的构建提供了理论依据，可提高对截获小蠹虫的总体鉴定水平。

As the bark beetle damages in the trunk or the inner bark of trees, it can be easily transmitted during international trade in timber and wooden packing material, so the quarantine of bark beetle is very important.

由于其在木材和树皮下危害，使得小蠹虫随木材进口和各种货物木质包装材料在国际间传播的机会大大增加，因此具有十分突出的检疫重要性。

As the bark beetle damages in the trunk or the inner bark of trees,it can be easily transmitted during international trade in timber and wooden packing material,so the quarantine of bark beetle is very important.

小蠹虫是鞘翅目小蠹科昆虫的总称，全世界约有220属，6000种左右，是林木害虫中一个极重要类群。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"