Crystals having this property are said to be doubly refracting , or birefringent.具有这种性质的晶体叫做双折射晶体.Such substances are optically anisotropic and birefringent.这种材料是光学各向异性的,因而是双折射晶体.The stressmeter consists of a short solid...
这是公狗还是母狗？Is this a dog or a bitch?不论公狗还是母狗,都应该显得结实、骨量充足.Both dog and bitch appear solid and of good substance.公狗比母狗要宽.Broader in dogs than in bitches....
不遵守消防规章的行为要受到处罚。There are penalties for non-compliance with the fire regulations.不遵守这些条件将导致合同终止。Failure to comply with these conditions will result in termination of the contract.他们知道怎样控制、限制信息获取途径，而且如果需要，还会将其完全阻断，而这些途径对报...
There are wide variations caused by different academic programme structures.不同的教学项目结构造成了巨大的差异。regional variations in pronunciation发音的地区差异The dial records very slight variations in pressure.该刻度盘能显示很微小的压力变化。...