tar-wood

To improve the safety of smoking, we have developed a Virginia type cigarette of low tar, low free radicals and rich selenium A variety of techniques were adopted in our research work These techniques include adding catalysts which can speed up the decomposition of organic compounds and reduce the products of dry distillation, applying combustion\|supporting agents to cut tobacco to raise the temperature of burning zone and accelerate the speed of combustion, combining rich selenium tobacco in cigarett...

在研制过程中，利用一系列工艺技术，如选择能够促进有机化合物裂解、减少干馏物形成的催化剂添加到卷烟烟丝中来降低焦油释放量；选择能够提高燃烧锥温度和燃烧速率的助燃剂；添加高效能的自由基捕获剂来捕获卷烟燃烧过程中产生的自由基；在叶组配方中使用一定量的富硒烟叶等。

Biomass-based tar ; dry distillation carbonization ; chemical component ; Gas Chromatography-Mass Spectrometry

生物质焦油；干馏炭化；化学组成；气相色谱-质谱

The name Pismo is a Chumash Indian word for "blobs of tar," known today as Pismo clams.

庇斯摩是一个印第安词语，意思是&滴滴柏油&，但如今这个名字却以庇斯摩蛤而闻名。

An experimental study of 300 mice exposed to pitch(3 gm.dissolved in 10 ml.of 80% benzene solution)obtained from 4 different sources,name- ly Anshan coal-tar pitch,Yu-men petroleum pitch,Dairen petroleum pitch or commonly known as Russian crude oil and the Asia Oil Company, USA,was carried out over a period of 350 days.

三根据四种来源不同的沥青所引起皮肤良性与恶性病变的发病率和潜伏期的长短，可将其毒性的强弱顺序排列如下：(1)鞍山煤焦油沥青，(2)美国亚细亚公司石油沥青，(3)大连石油沥青，(4)西北玉门石油沥青。

It is useless spoiling the ship for a ha'p'orth of tar.

吝惜半便士柏油而毁坏一只船。

NIt is useless spoiling the ship for a ha'p'orth of tar.

吝惜半便士柏油而毁坏一只船。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐