设计精巧的小公文包a natty little briefcase我们佩服工艺师精巧的手艺.We admired the delicacy of the craftsmanship.这种装置精巧的构造可能使科学家感到惊奇.Scientists might be amazed by the ingenious arrangement of the apparatus....
植株树干用铝制套筒包着.Aluminum sleeves were placed around the stems.套筒必须将预计中积雪最高处以上的茎干包裹着.The sleeves must cover stems to a point above the greatest expected snow accumulation.此外, 在 长期 的使用以后套筒冠的固位力可能有显著地下降.Additionally, a marked d...
Magnesium hydroxide particles were synthesized via decomposition of hydrosulfide compound followed with hydrothermal treatment.以工业氯化镁和硫氢化钡为原料,采用复分解法合成高纯氢氧化镁.Thioglycolic acid ( TGA ) was synthesized from thioglycolic aci...