致密的

When the height reduction is 25%, the preform processed by SMC-TG is compact basically, and there are many pores in SMC preform. Due to SMC-TG could densify the spray deposited preform effectively, the mechanical property is improve obviously.

由于梯温楔压工艺能提高喷射沉积多孔坯料的致密化效果，因此使梯温楔压试样的力学性能也得到了大幅度的提高。

The intensity of pressure is the most markable factor that influence the casts mechanical properties and microstructure. When its value exceeds 40MPa, the disfigurement such as shrinkage porosity can be effectively reduced . when its value exceeds 120MPa, the pressure obviously influence the crystal performances of liquid metal also, and compact homogeneous exiguous equiaxial crystal can be obtained. Pressure can also increase the solubility of Cu in a -Al.

比压是对铸件力学性能和显微组织最为显著的因素，其取值超过40MPa时，能有效减少缩松等缺陷，当比压超过120MPa时，除了能减轻铸造缺陷外，还对液态金属的结晶性能产生显著影响，在铸件断面上得到致密、细小且均匀的等轴晶。

Spontaneous activities of SNc neurons in brain slice of young rats were recorded extracellularly, which were divided into periodic and non-periodic firing patterns.

通过研究黑质致密部(substantia nigra compacta，SNc)神经元的放电型式与其对谷氨酸、多巴胺及缺氧敏感性的关系，探讨&非周期敏感&现象在神经系统的普遍性。

According to plasticity of porous and dense materials, an evolution model of dimensions and relative density for cylindrical canned powders during hipping was first established and the criterion for uniform compaction under the same conditions was derived. The above results can serve as a guidance for determining the can dimensions in practice.

根据孔隙性材料和致密材料的塑性理论，本文首次建立了圆柱形包套粉末体在热等静压过程中几何尺寸及相对密度的演化模型，提出了圆柱形包套粉末体均匀收缩的临界判据，对实际生产中合理确定包套尺寸具有指导作用。

The wood is dense and hard; at the same time, it is also mothproof and endurable; therefore, it is really a good material for making superb furniture, for use in construction, and for making gunstocks etc. Tamarind seeds contain 63% starch.

酸角木材的边材黄白色，心材黑紫带棕色，结构致密、硬重，防虫、耐用，韧性强，是优质家具、建筑、枪托、车轴、船帮、蒸笼等的良好用材，市场销售中，商人们誉之为珍贵的&马德拉红木&。

Results show that at 500℃ polycarbsilanedecomposed into noncrystallized SiC and free caron and impurities which hinder the densificationof the composite are also found during the above decomposition process, with the increase ofheating temperature, the noncrystallized SiC can be transformed into β-SiC.

一般传统的制备方法是，向C和SIC粉末中添加烧结助剂B，B；，A12O；；AIN等球磨混合，采用粉末冶金热压烧结；尽管采取了一些特殊的工艺手段和添加烧结助剂的方法，但该材料须在高于2000t时烧结且致密化效果较差［'1。

Abstract］ objective to discuss radiological findings of parosteal osteosarcoma on emphasis combined with clinical pathology and literature.methods 4 cases of parosteal osteosarcoma proved by operation and pathology were analyzed retrospectively.results female was 3 cases,male was 1 case,average age was 30.5 years old,these tumors were arised on posterior border of distal femur and popliteal cavity,presented as lobular dense ossified mass,defined lesion.one case had villose margin.a thin narrow lucent zone separated the mass from the cortex at two cases.one case underwent angiography,there was no malignant feature.conclusion parosteal osteosarcoma may be divided into low-grade type and high-grade type.radiological manifestations of early stage possess character,early diagnosis conduces to establish rational treating plan and evaluate prognosis.

目的 结合临床病理学特征和文献资料，重点讨论皮质旁骨肉瘤的x线特征。方法收集经手术、病理证实的皮质旁骨肉瘤病例4例，对其进行回顾性分析。结果 4例患者女3例，男1例，平均年龄30.5岁，肿瘤均发生于股骨远端后侧和腘窝处，表现为分叶状致密骨化肿块，边界清晰，其中1例边缘呈绒毛状改变，2例有细窄透亮带与骨皮质相隔，1例行血管造影，未见血管池等恶性征象。结论皮质旁骨肉瘤分为低度恶性和高度恶性两种，早期影像学表现有特征性，早期诊断有助于制订相应的治疗方案和评估预后。

Using slow-adding and fast-agitating method, protective coating is prepared by adding proper filler, plasticizer, curing agent, solvent and so on, then the formula is optimized according to analysis of the performance of self-production and other production made at home and abroad, including appearance, viscosity, solid content, corrosion resistance, etching ratio, compactibility, bonding force and peelable ability.

在基料中配以合适的填充剂、增塑剂、固化剂和溶剂等，采用慢加快搅法制备此种涂料，并通过对比自制涂料和国外化铣保护涂料的性能及分析数据，即外观、黏度、固体含量、抗蚀性、浸蚀比和致密性，优化保护涂料的配方。

Methods:Under the guidance of computer stereotactic equipment, the biopsy needle was introduced into the lesion in question which was impalpable but recognizable roentgenologically .

它是在常规乳腺X线片观察分析的基础上，对临床触不到，而X线片显示的乳腺小结节，微小钙化，局限致密浸润，通过电子计算机立体定位仪指导，将乳腺穿刺针直接刺入可疑病变区，取得活体组织标本，进行组织病理学检查的方法。

The result shows that:(1) the color of turquoise is controlled by Fe~(3+),Cu~(2+), and surface weathering intensity.(2) The structure of turquoise can be described asmicrocrystal-squama texture and spherulitic texture.

结果表明：(1)绿松石颜色除与致色元素Fe~(3+)、Cu~(2+)的含量有关，还与表生风化作用的强度相关，随表生风化作用的增强，颜色变浅，致密程度降低。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。