木经

杨木经其处理30天后木质素降解率达到22.67%和15.46%。

The degradation rate of lignin reached 22.67 % and 15.46 % after treatment of populus for 30 d.

研究了针叶木经两台串联的、采用不同功率分配的盘磨机磨浆后纤维形态、浆料滤水、成纸性能以及磨浆能耗的变化。

Double disc refiners in series adopted different power distribution in the high speed machine refining system was studied . Fiber morphology , dewatering rate , paper property and refining energy were researched after softwood long fibers were refined by the refiners .

低聚木糖（XOs）薄层层析显示，苹果木聚糖经酶解的主要产物是X2、X3，且X3的含量大于X2的含量。

Thin-layer chromatography ( TLC ) of XOs showed that the main enzymatic hydrolyzate of apple xylan were X3 and X2 , and the content of the X3 was large than X2 .

木粉经处理后，可以用适当的方法与高分子材料复合加工成木塑复合材料。

After trial treatment and using the appropriate method , the wood flour can be processed into Wood Plastics Composites with high polymer material .

对397株杉木人工林平均木立木蓄积经4种计算方法的计算结果进行分析，表明不同方法计算的蓄积均有显著差异。

After analyzing the results from 397 mean sampletrees ′ cumulation using 4 different methods of calculation , it is stated that there are remarkable differences among these results from different methods .

热重分析表明，杨木粉经磷氮系膨胀型阻燃剂处理后，炭化阶段的峰温有所下降，活化能减小，速率常数变大，残余炭量由22.5%增加到36.3%，增加比例达到61.3%；

The results by thermogravimetric analysis showed that the peak temperature and activation energy in the charring step decreased and charcoal yield increased from 22.5 % to 36.3 % , or increasing rate of 61.3 % , on poplar wood treated by P-N intumescent flame retardant .

SEM分析表明，杨木单板经表面化学镀Ni-P合金后，表面完全被镀层覆盖，金属感增强。

SEM photographs showed that the surface of the veneer was covered with a layer of continuous and uniform Ni-P alloy entirely , which made the poplar veneer more like metal .

木聚糖酶经纯化后酶活略有提高。

The xylanase activity was slightly improved after refined .

木素含量较高的未漂针叶木硫酸盐浆经芬顿试剂处理后，纤维的结晶度降低了8.4%，粘度也有所降低，降低了25.7%。

Thickness swelling decreased to 25.3 % . Unbleached softwood Kraft pulp with high lignin content was treated by Fenton reagent . The crystalline of fiber was decreased by 8.4 % . Viscosity of cellulose was reduced by 25.7 % .

杨木单板经表面化学镀镍后，表面完全被金属镍覆盖，金属感增强，并且镀层中磷含量较低，镀层为晶体结构。

The surface of electroless nickel-plated poplar veneers is covered with a layer of Ni-P entirely , which makes poplar veneers more like metal . The nickel-plate is crystal structure and the content of phosphorus in it is very low .

硅化木是古代树木经地质作用而形成的木化石，其主要化学成分为SiO2。

Silicified wood is wooden fossil from ancient tree formed by geological process and mainly consists of SiO_ ( 2 ) .

同时东北作为边疆地区，山于移民不断地向北推进，到清朝木年，己经到达黑龙江边。

Meanwhile , as a borderland , with migrants constantly moving in . by the end of the Qing Dynasty , Northeast had reached the Heilong River .

本文比较了白桦小径木横截片经尿素和脲醛树脂改性后的干缩特性的差异。

In this paper , the difference of shrinkage properties of small diameter birch discs was compared under 3 conditions , such as modified with urea , with UF resin and without any treatment .

杨木与桉木KP浆经氧脱木素，卡伯值分别降低48.1%和47.3%。

Kappa numbers of Populus and Eucalyptus kraft pulps are reduced by 48 1 % and 47 3 % respectively after oxygen delignification .