一棵棵高大橡树的枝条随风摇摆。The wind was bouncing the branches of the big oak trees.窗户外边是一块草地，高高的草随风摇摆。The windows overlooked a lawn of tall waving grass.船在波涛起伏的海浪中剧烈摇摆。The boat rolled heavily in the troughs between the waves....
Applicable to the corner seaming of leather shoes lea ther bags.适用于皮鞋、运动鞋、皮包等类似物品的转角缝纫.Best suitable for stitching tents, seat cushions , horse gears, and gunnysacks, cars seaming and so on.适用于帐篷, 坐垫, 抛光输(布输)马具, 黄麻袋, 汽车车...
The floatation performance of jamesonite with diethyldithiocarbamate as collector is studied.研究了以乙硫氮为捕收剂时脆硫锑铅矿的浮选性质.A new type of inhibitor ( RC ) was used for separating jamesonite from pyrrhotite.研究了新型抑制剂 RC 在脆硫锑铅矿和磁黄铁...