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chemical造句
(151) When small atoms bond together through ionic or covalent chemical bonds, the compactness of the bond makes it extremely strong. (152) To his right, stood a large walk-in cupboard marked as chemical storage, its door slightly ajar. (153) Ideals are not formed in an aseptic vacuum, but in the chemical brew of interacting personal lives and events. (154) No scientific lecture is ever given without slides or other visual aids, especially if chemical structures are to be shown. (155) It claims that the stringent tests applied to chemical additives would lead to unacceptable delays in the introduction of genetically-altered foods. (156) For instance, many people learn in high school that alcohol is a depressant-a kind of chemical sledgehammer for the mind. (157) Also a film presents less surface area to a chemical than does particulate matter. (158) They are used in combination to set apart two main groups, the detrital and the chemical. (159) Chemical filtration - for keeping butterfly and angelfish - means activated carbon. (160) He has been especially dodgy about agreements meant to prevent him from developing chemical, biological or nuclear weapons. (161) The problem with all these calculations is they assume a homogenous chemical mantle. (162) Such a situation does often arise, for example in the feedback control of a chemical process. (163) Connect the companies that announced deals. a. Chemical Banking Corp. 1. (164) The company told analysts last week that chemical earnings would likely dip by more than 50 percent in 1996. (165) The atmosphere was being poisoned, every green thing blighted, and every stream fouled with chemical fumes and waste. (166) For example, the industrial giants who dominate the chemical industry have large capital investments in petrochemicals. (167) Ceramics Two general approaches have been much used: thin-section petrography and chemical analysis of the body fabric or composition. (168) But both of these contain caffeine and other chemical stimulants which are quickly absorbed into the bloodstream. (169) His other suggestions were in respect of a chemical pump and an air pump. (170) Folic acid, a B vitamin, reduces heart-attack risks by lowering a potentially deadly blood chemical called homocysteine. (171) It contains fewer chemical pollutants, which asthmatics are often allergic to, and so helps to prevent asthma attacks. (172) Regional conflicts - along with the proliferation of missiles and nuclear, chemical and biological weapons - present growing dangers. (173) One was sampled and subjected to chemical and structural analysis. (174) Mubarak's initiative for a Middle East free from nuclear, chemical and biological weapons was also welcomed. (175) As a multi-skilled employee, her shifts involve chemical analysis, production monitoring and work as a colourist. (176) The group's latest album gives a cautionary account of chemical dependency. (177) There was a loud boom. The chemical works was on fire. (178) All archaebacteria thrive in intense heat, and most derive their energy from breaking chemical bonds. (179) One worker would have suffered fatal burns had he not worn a protective chemical suit which was not routine for repair work. (180) Dow Chemical supports 26 advisory panels that address issues of importance to the community.