| 1. | The surface density of galaxies in a cluster can be measured from photographs .
一个星系团中星系的表面密度可从其照片上测得。 |
| 2. | Textiles . tests for fabrics . method for the determination of the surface density
纺织品.织物试验.表面密度的测定方法 |
| 3. | . aluminium and aluminium alloys - anodizing - determination of mass per unit area surface density of anodic oxidation coatings - gravimetric method
铝和铝合金.阳极氧化.阳极氧化涂层单位面积 |
| 4. | Their antistatic performances were determined using methods of electrification voltage by friction and surface density of charge
采用摩擦起电电压法和电荷面密度法，对其进行了抗静电性能测试。 |
| 5. | . en 12373 - 2 aluminium and aluminium alloys . anodizing . part 2 : determination of mass per unit area surface density of anodic oxidation coatings . gravimetric method
铝和铝合金.阳极化.第2部分:阳极氧化物层单位面积质量的测定 |
| 6. | Experimental results indicated that surface density of charge of the acrylic fabrics contained 7 . 68 % of the stainless steel filament decreased by 96 . 11 % as compared with the pure acrylic fabric
与纯腈纶织物相比，加说7 . 68 %不锈钢长丝的腈纶织物的电荷面密度降低96 . 11 % 。 |
| 7. | The main crack of tiaohu formation are straight oblique - cracks and level crack , there are many scores in the crack . the length of cracks is long , and they cut across several layers . the average surface density of the cracks is 0 . 101 slips / m . the cracks in lucaogou formation is mostly net cracks , and there are solution on crack surface
条湖组的裂缝多为平直的斜交缝和水平缝，缝面多见擦痕，延伸长度大，切穿多套地层，裂缝面密度平均为0 . 101条米；芦草沟组裂缝多为网状裂缝，缝面有溶蚀现象，多存在于碳酸盐岩内，裂缝面密度平均为0 . 143条米。 |
| 8. | Using water - soluble carbodiimide as condensation agent , biomacromolecules such as gelatin , collagen and chitosan were covalently grafted on the plla - g - pmaa membranes . solution of the biomacromolecules was further coated on the above membranes to increase the surface density of the biomacromolecules . this technology was designated " grafting and coating " method
为了将生物大分子化学接枝于plla膜表面，首先在plla膜表面接枝pmaa ，将羧基引入plla表面，利用水溶性碳化二亚胺edac作为缩合剂，与含有氨基的生物大分子反应，可将生物大分子如明胶、胶原和壳聚糖化学接枝在plla膜表面。 |
| 9. | Eight concrete samples of different compound ratio of artificial lightweight aggregate ( coarse aggregate of expanded shale ) and ordinary aggregate , water - reducing admixture , expanding admixture , etc , are compounded firstly , based on the research of main properties such as agitating property , strength , dry surface density and deformation , an optimum compound ratio of the concrete with high strength ( cl40 ) , light density ( 1800 ) and slight expand is achieved
首先，采用人造轻骨料(页岩陶粒)及普通骨料，加入减水剂、膨胀剂等，配制出了八种不同配合比的轻骨料砼与普通砼，并对其和易性、强度、干表观密度、变形等主要性能进行了试验研究，得到了强度等级cl40 ，密度等级1800的轻骨料中高强度微膨胀砼最佳配合比。 |
