護壁套管 的英文怎麼說
中文拼音 [hùbìtàoguǎn]
護壁套管
英文
protection casing- 護 : 動詞1. （保護; 保衛） protect; guard; shield 2. （袒護;包庇） be partial to; shield from censure
- 壁 : 名詞1 （墻） wall （of a house etc ） : 銅墻鐵壁 bastion of iron2 （作用像圍墻的部分） wall of st...
- 套 : 名1 （套子） cover; case; sheath 2 （河流或山勢的彎曲處） a bend of a river or a curve in a mount...
- 管 : Ⅰ名詞1 （管子） pipe; tube 2 （吹奏的樂器） wind musical instrument 3 （形狀似管的電器件） valve;...
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Abstract : the paper presented a kind of drilling hole method that adopted direct circulation and percussion drilling, casing and cliff - protection by mud. the method applied in the complex gravel layer which has the trend to emerge cave - in and drop from the drilling wall
文摘:介紹一種在砂卵石地層層厚復雜、孔壁易掉塊、易坍塌的鉆孔的成孔方法? ?正循環回轉與沖擊鉆進、套管與泥漿護壁成孔。Anti - dumping, being a focus problem in international trade since two decades ago, can be attributed to the effects that achieved by eight successive rounds of gatt multilateral negotiation that traditional trade barriers have been greatly weakened. for example, tariffs have been cut down and non - tariff barriers such as quotas and licenses have been reduced. at the same time, a new suit of legal trade tools permitted by gatt / wto such as anti - dumping. anti - subsidy and safeguard measures emerge as the time require. despite the different opinions about anti - dumping in economy theory bounds, trade bounds and law bounds. nowadays, to many countries especially the western countries, anti - dumping has become one of the most important means to restrain unfair trade and protect domestic industries. since the founding of wto, 1995, every member of wto has established, amended and perfected their own anti - dumping, measures one after another according to wto agreement on anti - dumping. anti - dumping has become an essential part of the trade policy and law in every country
這是因為經過關貿總協定（ gatt ）八輪多邊談判，各國進口關稅稅率不斷下降，進口配額和許可證等非關稅壁壘措施也日益減少，傳統的貿易壁壘措施作用被極大削弱。代之而起的例如反傾銷、反補貼、保障措施等事一套新的被gatt以及世界貿易組織（ wto ）所允許的合法的貿易工具應運而生。盡管在經濟理論界、國際貿易界及法學界對反傾銷還存在不同認識和看法，但自1948年關貿總協定這一多邊貿易體制建立以來，反傾銷已成為當今各國，尤其是西方國家抑制不公平貿易、保護國內產業的重要手段之一。
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