It can be lifted in single leaf or double leaves, and operated smoothly and freely. It wears well.
单扇提拉或双扇提拉均可，操作灵活自如，经久耐用。
That leaves many emerging markets facing a double whammy in 2009.
这些行为将导致新兴国家在2009年面临双重打击。
If the party who leaves the deposit defaults, he shall not be entitled to demand the return of the deposit; if the party who accepts the deposit defaults, he shall repay the deposit in double.
给付定金的一方不履行债务的，无权要求返还定金；接受定金的一方不履行债务的，应当双倍返还定金。
So, in fact, this double blind placebo controlled study does not guarantee safety or efficacy because the test leaves far too many questions unanswered.
所以实际上，双盲对照研究并不会保证疗效和安全，因为它留下太多无法回答的问题。
A North American deciduous tree (Ulmus Americana) having double serrate leaves and winged fruits. It is grown chiefly as an ornamental shade tree but often dies from Dutch elm disease.
一种北美落叶树(美洲榆)，有双齿叶和双翼果，主要作为观赏性浓荫树，但常患荷兰榆树病而坏死。
The key to the technique is to remove the terminal bud at seedling stage, so that the axillary buds of the first or the second pair of true leaves become double stem.
其关键技术是：于幼苗期摘除顶尖，使每单株第一对(或第二对)真叶叶腋间腋芽萌发成长为双茎。
Seedling height, stem thick, number of leaves, number of roots, and length of roots were studied by means of double-factor complete random design.
对不同品种脱毒试管苗的苗高、茎粗、叶片数、根数、根长等植物学性状采用二因素完全随机试验设计。
The effects of double-row concave ridge and film mulching on phosphorus content in flue-cured tobacco leaves and soils were studied by field and laboratory experiments.
采用田间试验与室内分析相结合的方法，探讨了烤烟地膜覆盖与双行凹型垄结合对烤烟及土壤磷素含量的影响。
The result indicated that: cutting bottom leaves to higher place and double tip pruning leaves can improve quality and optimize configuration of tobacco leaves.
结果表明高打脚叶与二次打顶后，烟叶质量提高，等级结构优化。
The relationship between arterioles and venules was that the arterioles bifurcated two times nearly double-leaves in shape, and the capillaries finally entered the venule in nearly right Angle.
微动脉与微静脉的关系是：微动脉两次近似直角双叶状分支，毛细血管汇集成毛细血管后微静脉或直接以直角汇入微静脉。
Unlike the double Z, which leaves multiple vertical scars, the V-Y leaves only a single vertical scar.
双重Z会留下多条垂直伤疤，V - Y则只留下一条垂直疤痕。
Unlike the double Z, which leaves multiple vertical scars, the V-Y leaves only a single vertical scar.
双重Z会留下多条垂直伤疤，V - Y则只留下一条垂直疤痕。
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