Lattice parameters are the important crystal structural parameters of polycrystalline materials.

Polycrystalline diamond coatings for tools are laid down using chemical vapor deposition.

工具用的复晶钻石涂层,则是使用化学气相沉积法制造的.

Polycrystalline diamond has many advantageous physical properties.

金刚石烧结体具有许多优异的物理机械性能.

Polycrystalline iron fiber is a novel magnetic material, which can be used widely in industry.

多晶铁纤维是一类新型磁性材料, 应用十分广泛.

Nowadays, the infection of quantum effects of polycrystalline silicon is also investigated.

近期, 多晶硅中量子效应对器件性能的影响也被研究.

Polycrystalline silicon is an aggregation of small silicon crystals.

多晶硅是细小硅晶的集合体.

Transgranular fracture. Fracture of polycrystalline materials by crack propagation through the grains.

多晶材料裂纹穿过晶粒扩展而断裂.

Intergranular fracture. Fracture of polycrystalline materials by crack propagation along grain boundaries.

多晶材料裂纹沿着晶界扩展而断裂.

Process of enhancing wear resistance of polycrystalline sintered compact has been studied.

研究了提高多晶烧结体耐磨性的方法.

Polycyclic aromatic hydrocarbons ( PAHs ) are group of commonly seen environmental pollution, and existed in environment wide-ranging.

多环 芳烃 是一类常见的环境污染物, 在环境中广泛存在,由于其致癌性和致突变性而受到广泛关注.

The polycyclic aromatic hydrocarbons ( PAHs ) in soil have serious latent danger to our human health.

土壤中的多环 芳烃 对人体健康具有潜在的危害.

On Earth, polycyclic aromatic hydrocarbons are found on burnt toast and in automobile exhaust.

在地球上, 可以在烤土司和汽车尾气中找到多环芳烃.

Incense in many Chinese homes and polycyclic aromatic hydrocarbons have been recovered from incense smoke.

很多中国人家里点香,香的烟中已经发现有多环芳香族碳氢化合物.

Polycyclic aromatic hydrocarbons are group of ubiquitous pollutants.

多环芳烃是一类普遍存在的环境污染物.

Charcoal-grilled foods contain a comparatively higher level of Polycyclic Aromatic Hydrocarbons ( PAHs ) .

碳烧食物所含的多环 芳香族 碳氢化合物通常相对较高.

Sometimes the liver ( as seen here ) can be affected as well by polycystic change.

多囊改变有时也可影响肝脏 ( 如图所示 ).

Numerous cysts appear in this liver from a patient with dominant polycystic kidney disease ( DPKD ).

显性遗传性多囊肾 ( DPKD ) 患者的肝脏中具有大量包囊.

What causes polycystic ovarian syndrome ( PCOS ) ?

多囊卵巢 综合征 原因是什么?

Does polycystic ovarian syndrome happen in adolescents?

青少年会患上多囊卵巢综合征 吗 ?

The role of insulin in the pathogenesis of polycystic ovarian syndrome.

胰岛素与多囊卵巢综合征发病的关系.

How is polycystic ovarian syndrome diagnosed?

如何诊断多囊卵巢综合症?