Local conditions, especially the presence or absence of oxygen, affect Biodegradability.地方的情况(特别是有氧或无氧)影响着生物降解.Starch has abundant resources , low price and natural biodegradability.淀粉产量丰富, 价格低廉,具有天然的生物降解性.Biodegradabili...
A 40 watt bulb would be quite sufficient and would not obtrude.40瓦的灯泡完全够亮了，并且不会晃眼。This makes the total cost of the bulb and energy £27.这使灯泡与电费合计为27英镑。The naked bulb was directly over his head.裸露的灯泡正好在他的头顶上方。...
Tooling Plate: Universal mounting pattern with standard dowel locating holes.模具板: 通用模式与标准安装定位桩孔.The carpenter gauged the dowel with calipers.那木匠用卡钳估量暗榫.It designs two spring dowel locating systems to rotate and locate th...